Unlucky Launcher v0.2.1

crates/design/tests/card_neutral.rs

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+//! D43：内置色卡的**固定中性色相**——切卡只换强调色，窗口底色的冷暖不跟着换。
+//!
+//! ## 这条测试要钉住的五件事
+//!
+//! 1. **天蓝卡（出厂默认）逐值不变**：固定的中性色相等于天蓝档的中性色相，所以天蓝卡必须与
+//!    [`Scheme::baseline`] 的 49 个角色**逐个相等**（M70 定案的不动点，p1 级硬约束）。
+//! 2. **八张卡的表面色完全相同**：`surface` 的 CAM16 色相一致（±1°）、实测彩度落在窄带内
+//!    （±1.5），且改前那条「9 倍差」被同时量出来当反证（见 `the_old_per_card_tinting...`）。
+//! 3. **动态路径不许被顺手改成固定中性**：这条必须走 **`resolve_source` 公开入口**测——
+//!    `Card::scheme` 那一层根本没有「取色」这回事，测它等于测空气（复审 r1 p1-1 就是这个：
+//!    把 `resolve::try_level` 的取色分支改成固定中性，8 条测试全绿）。见
+//!    `resolved_image_scheme_keeps_tinting_from_the_seed`。
+//! 4. **WCAG 不因换中性色相而掉档**：8 张卡 × 浅/深两套 × 26 对文字/图标对全部 ≥ 4.5:1。
+//! 5. 想让「八卡同底色」的带宽松掉，`the_old_per_card_tinting...` 会红（它量的是改前路径）。
+//!
+//! ## 为什么容差是这个带宽（不是随手取整）
+//!
+//! - **色相 ±1°**：八张卡现在共用一个中性调色板，`surface` 是**同一个 hex**，跨卡差实测 0.00°。
+//!   容差留 1° 是为了挡住「将来某张卡偷偷换回 TonalSpot」——那种回退的最小偏离是 **43°**
+//!   （dusk 280.31° vs 236.86°），1° 的带宽足以把 0 与 43° 分开，同时不误报 8 bit 量化。
+//! - **彩度 ±1.5（CAM16，单位与请求值 12 同刻度）**：tone 98 的 8 bit 量化会把「请求 12」
+//!   读回成 6.41（浅）/11.70（深），这层压缩是**同一个 hex 的常数偏移**，跨卡比较时抵消；
+//!   真正的危险是暖相回退——rose 1.29、amber 1.89，比基线低 4.5~5.1，远超 1.5 的带宽；
+//!   紫相（lavender 5.87）只低 0.54，靠上面的色相断言抓（298° 偏 61°）。带宽取 1.5 = 请求
+//!   彩度的 1/8，比「改前最小的一张卡偏离基线」还小，所以「9 倍差回来了」一定红。
+//!
+//! 改前/改后的 `surface` 实测表在子模块 [`dump`]（那里同时是验收图的数据源）。
+
+// 子模块放在 `tests/card_neutral/` 目录里（cargo 只把 `tests/*.rs` 顶层文件当一个 target，
+// 目录里的文件不会被当成独立 target；crate 根的子模块默认在 `tests/` 下找，所以显式 `#[path]`）。
+#[path = "card_neutral/common.rs"]
+mod common;
+#[path = "card_neutral/dump.rs"]
+mod dump;
+
+use common::{before_d43, flavors, hue_gap};
+use unlucky_design::color::{
+    Hct, Role, Scheme, SchemeFlavor, DEFAULT_NEUTRAL_CHROMA, NEUTRAL_HUE_DEG,
+};
+use unlucky_design::palette::card::card_scheme_is_readable;
+use unlucky_design::palette::{
+    resolve_source, Card, CardKey, ImageInput, Level, CARDS, DEFAULT_CARD, TEXT_PAIRS,
+};
+
+/// 天蓝卡就是产品默认色：固定的中性色相**沿用**它，所以 49 个角色必须一位不差。
+///
+/// 这条是 M88 的 p1 级硬约束。它红了只说明一件事：把「沿用天蓝的中性」实现成了「另选一个中性」。
+#[test]
+fn sky_card_is_bit_identical_to_the_product_baseline() {
+    for flavor in flavors() {
+        let baseline = Scheme::baseline(flavor);
+        let sky = DEFAULT_CARD.scheme(flavor);
+        for (role, got) in sky.iter() {
+            assert_eq!(
+                got,
+                baseline.get(role),
+                "天蓝卡（出厂默认）的 {} / {} 变了：{} → {}",
+                role.name(),
+                flavor.name(),
+                baseline.get(role).to_hex(),
+                got.to_hex()
+            );
+        }
+    }
+}
+
+/// 八张卡的 `surface` 共用同一个中性调色板：色相一致（±1°）、彩度落在窄带（±1.5）。
+#[test]
+fn preset_cards_share_one_neutral_hue_and_chroma() {
+    for flavor in flavors() {
+        let hcts: Vec<(&str, Hct)> = CARDS
+            .iter()
+            .map(|card| {
+                (
+                    card.key,
+                    Hct::from_color(card.scheme(flavor).get(Role::Surface)),
+                )
+            })
+            .collect();
+        let reference = hcts[0].1;
+        for (key, hct) in &hcts {
+            assert!(
+                hue_gap(hct.hue, reference.hue) <= 1.0,
+                "{key} / {} 的 surface 色相 {:.2}° 偏离基线 {:.2}° 超过 ±1°",
+                flavor.name(),
+                hct.hue,
+                reference.hue
+            );
+            assert!(
+                (hct.chroma - reference.chroma).abs() <= 1.5,
+                "{key} / {} 的 surface 实测彩度 {:.2} 偏离基线 {:.2} 超过 ±1.5",
+                flavor.name(),
+                hct.chroma,
+                reference.chroma
+            );
+        }
+        // 更强的口径：八张卡的 surface 是**同一个色值**（不只是「相近」）。
+        let surfaces: Vec<String> = CARDS
+            .iter()
+            .map(|card| card.scheme(flavor).get(Role::Surface).to_hex())
+            .collect();
+        assert!(
+            surfaces.iter().all(|hex| hex == &surfaces[0]),
+            "{} 模式下八张卡的 surface 不再逐值相同：{surfaces:?}",
+            flavor.name()
+        );
+    }
+}
+
+/// 反证：上面那条断言**量得出**问题。改前的路径浅色档彩度差 9 倍，改成固定中性后只剩 1 倍。
+///
+/// 没有这条的话，「±1.5 的带宽」只是一句自我声明：谁把断言写松（比如改成 ±20），
+/// `preset_cards_share_one_neutral_hue_and_chroma` 照样绿，而窗口又开始逐卡染色。
+///
+/// ⚠️ **9 倍差只出现在浅色档**：tone 98（近白）的暖相色域装不下彩度 12，rose 只兑现到 1.29；
+/// 深色档的 tone 6 反而每张卡都装得下（11.63~12.45，只差 1.07 倍）。深色档的问题不是彩度，
+/// 而是**色相**（14.66°~300.57°，整整一个色环）——它在深底上表现为「有的卡偏紫、有的偏绿」。
+/// 所以两个模式的反证分开断言，别用一条 `> 8` 覆盖两个模式（那样深色档会红，且说不清为什么）。
+#[test]
+fn the_old_per_card_tinting_really_was_a_ninefold_gap() {
+    let surface_hct = |scheme: &dyn Fn(Card) -> Scheme| {
+        CARDS
+            .iter()
+            .map(|card| Hct::from_color(scheme(*card).get(Role::Surface)))
+            .collect::<Vec<_>>()
+    };
+    let chroma_ratio = |hcts: &[Hct]| {
+        let max = hcts.iter().map(|h| h.chroma).fold(f64::MIN, f64::max);
+        let min = hcts.iter().map(|h| h.chroma).fold(f64::MAX, f64::min);
+        max / min
+    };
+    let hue_span = |hcts: &[Hct]| {
+        // 色相是环：这里只关心「跨了多少」，用最大凸包跨度（简单排序后首尾差）就够粗判。
+        let mut hues: Vec<f64> = hcts.iter().map(|h| h.hue).collect();
+        hues.sort_by(|a, b| a.partial_cmp(b).expect("有限色相"));
+        hues[hues.len() - 1] - hues[0]
+    };
+
+    // 浅色档：彩度 9 倍差（改前）→ 1 倍（改后）。
+    let old_light = surface_hct(&|card| before_d43(card, SchemeFlavor::Light));
+    assert!(
+        chroma_ratio(&old_light) > 8.0,
+        "改前（浅色）的 surface 彩度差应当能量出「9 倍级」跳变，实测 {:.2} 倍——\
+         这条反证已经失效，上面的 ±1.5 带宽就不可信了",
+        chroma_ratio(&old_light)
+    );
+    let new_light = surface_hct(&|card| card.scheme(SchemeFlavor::Light));
+    assert!(
+        chroma_ratio(&new_light) < 1.5,
+        "固定中性后（浅色）八张卡的 surface 彩度差还有 {:.2} 倍",
+        chroma_ratio(&new_light)
+    );
+
+    // 深色档：彩度本来就一致，问题是色相跨了整个环 → 改后色相跨度收敛到 0。
+    let old_dark = surface_hct(&|card| before_d43(card, SchemeFlavor::Dark));
+    assert!(
+        hue_span(&old_dark) > 180.0,
+        "改前（深色）的 surface 色相应当横跨大半个色环，实测 {:.2}°",
+        hue_span(&old_dark)
+    );
+    assert!(
+        chroma_ratio(&old_dark) < 1.5,
+        "改前（深色）的彩度本来就一致（tone 6 装得下彩度 12），实测 {:.2} 倍",
+        chroma_ratio(&old_dark)
+    );
+    let new_dark = surface_hct(&|card| card.scheme(SchemeFlavor::Dark));
+    assert!(
+        hue_span(&new_dark) < 1.0,
+        "改后（深色）色相跨度 {:.2}°",
+        hue_span(&new_dark)
+    );
+    assert!(chroma_ratio(&new_dark) < 1.5);
+}
+
+/// 换卡只换强调族：不随强调色变的角色必须逐值相同，强调族必须真的换。
+///
+/// 「哪些角色属于强调族」不靠手抄清单，而是**实测**：拿另一个强调色再生成一套方案，值会变的
+/// 那些角色就是强调族（primary/secondary/tertiary 全族 + `surface-tint` + `inverse-primary` +
+/// 12 个 `*-fixed*` = 26 个），不随强调色变的 23 个（中性表面、描边、error、shadow/scrim）
+/// 则必须留在基线——这样将来往 tone 表里加角色也不会漏掉分类。
+///
+/// ⚠️ 浅色档只有 **23** 个会变：`on-primary` / `on-secondary` / `on-tertiary` 的 tone 是 100，
+/// 任何色相都解析成纯白，所以强调色换了它们也不变（深色档的 tone 是 20，会变）。
+#[test]
+fn cards_only_change_the_accent_families() {
+    for flavor in flavors() {
+        let baseline = Scheme::baseline(flavor);
+        let recolored = Scheme::from_accent(flavor, CardKey::Teal.card().seed);
+        let (mut accent_roles, mut neutral_roles) = (Vec::new(), Vec::new());
+        for role in Role::ALL {
+            if recolored.get(role) == baseline.get(role) {
+                neutral_roles.push(role);
+            } else {
+                accent_roles.push(role);
+            }
+        }
+        assert_eq!(
+            (accent_roles.len(), neutral_roles.len()),
+            if flavor.is_dark() { (26, 23) } else { (23, 26) },
+            "强调族 / 中性族的划分变了（{} 模式下换强调色会动 {} 个）",
+            flavor.name(),
+            accent_roles.len()
+        );
+
+        let sky = DEFAULT_CARD.scheme(flavor);
+        for card in CARDS {
+            let scheme = card.scheme(flavor);
+            for role in &neutral_roles {
+                assert_eq!(
+                    scheme.get(*role),
+                    sky.get(*role),
+                    "{} / {} 的 {}（不随强调色变的角色）不该跟着卡变",
+                    card.key,
+                    flavor.name(),
+                    role.name()
+                );
+            }
+            if card.key != DEFAULT_CARD.key {
+                assert_ne!(
+                    scheme.get(Role::Primary),
+                    sky.get(Role::Primary),
+                    "{} / {} 的主色与天蓝卡相同：卡没生效",
+                    card.key,
+                    flavor.name()
+                );
+            }
+        }
+    }
+}
+
+/// 卡方案 = 用该卡种子做「自定义强调色」：中性表面留在基线，强调族与官方 `from_seed` 对得上。
+///
+/// 这条把 D43 接到已有的 `tests/official_accent.rs`（192 项官方对账）上：色卡的强调族不是
+/// 另一套算法，就是那条已经对过账的路径。
+#[test]
+fn card_scheme_matches_from_accent_when_chroma_is_the_default() {
+    for card in CARDS {
+        if card.neutral_chroma != DEFAULT_NEUTRAL_CHROMA {
+            continue; // 将来的卡可以带别的中性彩度；那时它的表面色与 baseline 不同是有意的
+        }
+        for flavor in flavors() {
+            assert_eq!(
+                card.scheme(flavor),
+                Scheme::from_accent(flavor, card.seed),
+                "{} / {} 的色卡方案与 from_accent 不一致",
+                card.key,
+                flavor.name()
+            );
+        }
+    }
+}
+
+/// **生成器层**：同一张图，两张不同色卡下强调色相同、底色由图像 seed 决定。
+///
+/// ⚠️ 只测 `Seed::scheme` 这一层，**不覆盖接线**：取色分支在实际入口
+/// `palette::resolve::try_level` 里，接线由 `resolved_image_scheme_keeps_tinting_from_the_seed`
+/// 守（复审 r1 p1-1 的病根就是这条用例看着像守护、其实测不到接线）。
+#[test]
+fn image_scheme_ignores_the_preset_neutral_hue() {
+    // 4×4 纯 `#B23A48`（rose 卡的种子色）——色相远离固定的 239.5°，好坏都能分辨。
+    let pixels = [0xB2u8, 0x3A, 0x48, 0xFF].repeat(16);
+    let seed = unlucky_design::palette::seed_from_rgba(&pixels, 4, 4).expect("纯色图有种子");
+
+    let cards = [CardKey::Sky.card(), CardKey::Teal.card()];
+    let schemes: Vec<Scheme> = cards
+        .iter()
+        .map(|card| seed.scheme(SchemeFlavor::Light, card.neutral_chroma))
+        .collect();
+
+    assert_eq!(
+        schemes[0].get(Role::Primary),
+        schemes[1].get(Role::Primary),
+        "取色方案的主色只由图像种子决定，不该跟着当前色卡变"
+    );
+    assert_eq!(
+        schemes[0].get(Role::Surface),
+        schemes[1].get(Role::Surface),
+        "取色方案的底色由图像种子决定（当前八张卡的中性彩度相同，所以两套方案的表面色相同）"
+    );
+    let surface_hue = Hct::from_color(schemes[0].get(Role::Surface)).hue;
+    // 精确口径：中性**调色板**的色相必须来自图像种子（不是量化后的表面色——tone 98 的
+    // 8 bit 量化会让实测色相漂 2.7°~7°，见模块文档；拿它做等式断言只会引入假红）。
+    for card in cards {
+        let neutral_hue = seed.palettes(card.neutral_chroma).neutral.hue_deg();
+        assert!(
+            (neutral_hue - seed.hue).abs() < 1.0e-9,
+            "取色路径的中性色相 {neutral_hue:.2}° 没有跟着图像种子 {:.2}° 走",
+            seed.hue
+        );
+        assert!(
+            hue_gap(neutral_hue, NEUTRAL_HUE_DEG) > 100.0,
+            "取色路径的中性色相被拉到了色卡的固定中性色相——动态路径的逐色染色被弄丢了（D43 保留它）"
+        );
+    }
+    // 观感层：实测的表面色相明显靠近图像种子，而不是靠色卡的冷调中性色相。
+    assert!(
+        hue_gap(surface_hue, seed.hue) < hue_gap(surface_hue, NEUTRAL_HUE_DEG),
+        "取色方案的 surface 色相 {surface_hue:.2}° 更接近色卡中性色相而不是图像种子 {:.2}°",
+        seed.hue
+    );
+    for card in cards {
+        assert_ne!(
+            schemes[0].get(Role::Surface),
+            card.scheme(SchemeFlavor::Light).get(Role::Surface),
+            "取色方案的表面色与色卡路径相同，说明取色路径没在按图染色"
+        );
+    }
+}
+
+/// **接线的**守护测试（复审 r1 p1-1）：走产品公开入口 [`resolve_source`]，不是 `Card::scheme`。
+///
+/// 上一版只有生成器层那条用例：实测把 `palette::resolve::try_level` 的取色分支改成固定中性
+/// 时**8 条测试全绿**，而同一张 `#B23A48` 图的 `surface` 已从 `#FFF8F7`（暖白，跟着图走）
+/// 退化成 `#F6FAFF`（色卡冷白）。断言测 A 层、接线在 B 层——这条把整条链跑通。
+#[test]
+fn resolved_image_scheme_keeps_tinting_from_the_seed() {
+    // 4×4 纯 `#B23A48`：种子色相 15.5°（底色 8 bit 量化后读回 22.09°），离 239.51° 很远。
+    let pixels = [0xB2u8, 0x3A, 0x48, 0xFF].repeat(16);
+    let flavor = SchemeFlavor::Light;
+    let mut resolved: Vec<(CardKey, Scheme)> = Vec::new();
+    for key in [CardKey::Sky, CardKey::Teal] {
+        let (scheme, provenance) = resolve_source(
+            Some(ImageInput::pixels(&pixels, 4, 4)),
+            None,
+            Some(key),
+            flavor,
+        );
+        assert_eq!(
+            provenance.level,
+            Level::BackgroundImage,
+            "{key:?}：背景图这一级没被用上（回落链本身变了）"
+        );
+        resolved.push((key, scheme));
+    }
+
+    let surface = resolved[0].1.get(Role::Surface);
+    // ① 底色在按图染色：必须是暖白，而不是色卡那条冷调中性。这一格就是「变异检测器」。
+    assert_eq!(
+        surface.to_hex(),
+        "#FFF8F7",
+        "取色方案的 surface 被拉回了色卡中性色相"
+    );
+    let surface_hue = Hct::from_color(surface).hue;
+    assert!(
+        hue_gap(surface_hue, 22.0) < 5.0,
+        "surface 色相 {surface_hue:.2}° 没跟着图走"
+    );
+    assert!(
+        hue_gap(surface_hue, NEUTRAL_HUE_DEG) > 100.0,
+        "surface 色相 {surface_hue:.2}° 贴到了色卡固定的 {NEUTRAL_HUE_DEG:.2}°"
+    );
+    // ② 两张卡下强调色与底色都相同：底色只由图像决定，色卡只贡献中性彩度。
+    assert_eq!(
+        (resolved[0].1.get(Role::Primary), surface),
+        (
+            resolved[1].1.get(Role::Primary),
+            resolved[1].1.get(Role::Surface)
+        ),
+        "同一张图在两张卡下的主色与底色都该相同（八张卡的中性彩度都是 12）"
+    );
+    // ③ 与色卡路径明确不同：否则「取色」就等于「色卡 + 换强调色」。
+    assert_ne!(
+        surface,
+        DEFAULT_CARD.scheme(flavor).get(Role::Surface),
+        "取色方案的 surface 与天蓝卡的相同——取色路径退化成色卡路径了"
+    );
+}
+
+/// 8 张卡 × 浅/深 × 26 对：换中性色相后仍全部过 WCAG AA（`wcag::check` 全表），
+/// 并把最受中性色相影响的一对（on-surface / surface）钉在实测量级上。
+#[test]
+fn every_card_scheme_meets_wcag_aa_under_the_fixed_neutral() {
+    for card in CARDS {
+        for flavor in flavors() {
+            let scheme = card.scheme(flavor);
+            assert!(
+                card_scheme_is_readable(card, flavor),
+                "{} / {} 未过 WCAG AA 全表（{} 对逐对断言在 `palette::wcag::check`）",
+                card.key,
+                flavor.name(),
+                TEXT_PAIRS.len()
+            );
+            // 中性色相变了，最受影响的一对是 on-surface / surface（改前逐卡 16.23~16.44 浅 /
+            // 14.30~14.42 深）。改后八张卡同一个底色，这一对也逐卡相同，钉住量级免得漂移。
+            // 区间按模式分开：写成 `(浅区间) || (深区间)` 会让浅/深两个值互换也照样绿。
+            let body = scheme.contrast(Role::OnSurface, Role::Surface);
+            let band = match flavor {
+                SchemeFlavor::Light => 16.30..=16.40,
+                SchemeFlavor::Dark => 14.28..=14.36,
+            };
+            assert!(
+                band.contains(&body),
+                "{} / {}：on-surface/surface = {body:.3}，超出 {} 模式的实测区间 {band:?}",
+                card.key,
+                flavor.name(),
+                flavor.name()
+            );
+        }
+    }
+}

crates/design/tests/card_neutral/common.rs

@@ -0,0 +1,27 @@
+//! `card_neutral` 测试组共用的帮手：改前路径的复原、模式列表、色相环距离。
+//!
+//! 拆成子模块是为了单文件 ≤400 行的纪律（`card_neutral.rs` 是 crate 根，`common` / `dump`
+//! 只是它的子模块；cargo 只把 `tests/card_neutral.rs` 当一个 test target）。
+
+use unlucky_design::color::{Palettes, Scheme, SchemeFlavor};
+use unlucky_design::palette::Card;
+
+/// 改前的路径（M87 及之前）：中性调色板跟着种子染色（官方 TonalSpot）。
+///
+/// 产品代码已经不用它了，但公开 API 仍在（取色路径就靠它逐色染色），所以这里能原样复现「改前」。
+pub fn before_d43(card: Card, flavor: SchemeFlavor) -> Scheme {
+    Scheme::from_palettes(
+        &Palettes::from_seed_with_neutral_chroma(card.seed, card.neutral_chroma),
+        flavor,
+    )
+}
+
+pub fn flavors() -> [SchemeFlavor; 2] {
+    [SchemeFlavor::Light, SchemeFlavor::Dark]
+}
+
+/// 色相环上的最短距离（度）。
+pub fn hue_gap(a: f64, b: f64) -> f64 {
+    let raw = (a - b).abs();
+    raw.min(360.0 - raw)
+}

crates/design/tests/card_neutral/dump.rs

@@ -0,0 +1,68 @@
+//! 出图脚本读的 hex 行（无断言，纯打印）+ D43 的实测表（本文件就是那张表的来源）。
+//!
+//! 跑法：`cargo test -p unlucky-design --test card_neutral -- --nocapture`
+//!
+//! ## 改前 / 改后 `surface` 实测（2026-11）
+//!
+//! | 卡 | 改前 `surface`(浅) | 改后 `surface`(浅) | 改前 HCT(浅) | 改后 HCT(浅) |
+//! |---|---|---|---|---|
+//! | sky | `#F6FAFF` | `#F6FAFF` | 236.86° / 6.41 | 236.86° / 6.41 |
+//! | lavender | `#FDF7FF` | `#F6FAFF` | 298.10° / 5.87 | 236.86° / 6.41 |
+//! | forest | `#EEFDEE` | `#F6FAFF` | 157.01° / 11.77 | 236.86° / 6.41 |
+//! | amber | `#FFF8F4` | `#F6FAFF` | 71.48° / 1.89 | 236.86° / 6.41 |
+//! | rose | `#FFF8F7` | `#F6FAFF` | 22.09° / 1.29 | 236.86° / 6.41 |
+//! | teal | `#EBFEF8` | `#F6FAFF` | 182.42° / 12.03 | 236.86° / 6.41 |
+//! | dusk | `#FBF8FF` | `#F6FAFF` | 280.31° / 5.44 | 236.86° / 6.41 |
+//! | olive | `#F9FBE1` | `#F6FAFF` | 120.99° / 11.84 | 236.86° / 6.41 |
+//!
+//! 深色档同理：改前 `#09151C`~`#1F0F10`、彩度 11.63~12.45，改后八张卡统一 `#09151C`
+//! （235.70° / 11.70）。
+//!
+//! ## 这条用例为什么没有断言
+//!
+//! 它是**数据导出**（`CARD|` 行给 `/d/tmp/m88/render.py` 排版成验收图），断言在同目录的
+//! `card_neutral.rs` 里。放这里是为了让根文件留在 ≤400 行以内。
+
+use super::common::{before_d43, flavors};
+use unlucky_design::color::Role;
+use unlucky_design::palette::CARDS;
+
+/// 出图脚本读的 hex 行（改前 + 改后并排），跑法：
+/// `cargo test -p unlucky-design --test card_neutral -- --nocapture`。
+///
+/// 格式 `CARD|key|flavor|before|role=hex;role=hex;…`（承接那张「8 张卡 surface 色块并排 +
+/// 切 sky→teal 窗口底色」的验收图；渲染脚本 `/d/tmp/m88/render.py` 只做排版，数据全在这里）。
+#[test]
+fn dump_card_palette_for_the_color_card() {
+    const SHOWN: [Role; 10] = [
+        Role::Surface,
+        Role::OnSurface,
+        Role::OnSurfaceVariant,
+        Role::SurfaceVariant,
+        Role::SurfaceContainer,
+        Role::SurfaceContainerHigh,
+        Role::Outline,
+        Role::Primary,
+        Role::OnPrimary,
+        Role::PrimaryContainer,
+    ];
+    for card in CARDS {
+        for flavor in flavors() {
+            for (tag, scheme) in [
+                ("before", before_d43(card, flavor)),
+                ("after", card.scheme(flavor)),
+            ] {
+                let pairs: Vec<String> = SHOWN
+                    .iter()
+                    .map(|role| format!("{}={}", role.name(), scheme.get(*role).to_hex()))
+                    .collect();
+                println!(
+                    "CARD|{}|{}|{tag}|{}",
+                    card.key,
+                    flavor.name(),
+                    pairs.join(";")
+                );
+            }
+        }
+    }
+}

crates/design/tests/contrast_aa.rs

@@ -0,0 +1,255 @@
+//! WCAG AA 对比度门禁（M61 任务：「on-* 与其承载色至少满足 4.5:1，不达标的角色要显式标注例外」）。
+//!
+//! 三个性质让这条门禁可以做到「**换任何种子色都成立**」，而不是只对出厂紫成立：
+//! 1. 颜色建在 CIELAB `L*`（tone）轴上，`TonalPalette::tone` 精确命中 tone（误差 ≤1）；
+//! 2. WCAG 相对亮度只取决于同一条 Y 轴（`L*` ↔ Y 是双射）；
+//! 3. 角色 → tone 的映射与色相/彩度无关。
+//!
+//! 所以对比度主要由「两个角色的 tone 差」决定，与 user 选的强调色无关——下面对多组种子
+//! 逐一验证，就是在钉这个性质。
+
+use unlucky_design::color::{Color, Role, Scheme, SchemeFlavor};
+
+/// 正文文字：要求 ≥ 4.5:1（WCAG AA normal text）。
+const AA_TEXT: f32 = 4.5;
+/// 非文字元素（描边、图标块）：要求 ≥ 3:1（WCAG AA non-text）。
+const AA_NON_TEXT: f32 = 3.0;
+
+/// 文字/图标对（前景, 承载色）。两个模式都要过。
+const TEXT_PAIRS: [(Role, Role); 26] = [
+    (Role::OnPrimary, Role::Primary),
+    (Role::OnPrimaryContainer, Role::PrimaryContainer),
+    (Role::OnSecondary, Role::Secondary),
+    (Role::OnSecondaryContainer, Role::SecondaryContainer),
+    (Role::OnTertiary, Role::Tertiary),
+    (Role::OnTertiaryContainer, Role::TertiaryContainer),
+    (Role::OnError, Role::Error),
+    (Role::OnErrorContainer, Role::ErrorContainer),
+    (Role::OnSurface, Role::Surface),
+    (Role::OnSurfaceVariant, Role::SurfaceVariant),
+    (Role::OnBackground, Role::Background),
+    (Role::InverseOnSurface, Role::InverseSurface),
+    (Role::InversePrimary, Role::InverseSurface),
+    (Role::OnPrimaryFixed, Role::PrimaryFixed),
+    (Role::OnPrimaryFixedVariant, Role::PrimaryFixedDim),
+    (Role::OnSecondaryFixed, Role::SecondaryFixed),
+    (Role::OnSecondaryFixedVariant, Role::SecondaryFixedDim),
+    (Role::OnTertiaryFixed, Role::TertiaryFixed),
+    (Role::OnTertiaryFixedVariant, Role::TertiaryFixedDim),
+    // 卡片/浮层容器上的文字（M3 现行口径：层级靠 surface-container-* 表达）
+    (Role::OnSurface, Role::SurfaceContainerLowest),
+    (Role::OnSurface, Role::SurfaceContainerLow),
+    (Role::OnSurface, Role::SurfaceContainer),
+    (Role::OnSurface, Role::SurfaceContainerHigh),
+    (Role::OnSurface, Role::SurfaceContainerHighest),
+    (Role::OnSurfaceVariant, Role::SurfaceContainerHighest),
+    (Role::OnSurfaceVariant, Role::SurfaceContainerLow),
+];
+
+/// 显式登记的例外：`(前景, 承载色, 目标阈值, 原因)`。
+///
+/// 这些不是缺陷，是 M3 定义决定的（非文字元素 3:1、装饰件无要求）。
+const EXCEPTIONS: [(Role, Role, f32, &str); 3] = [
+    (
+        Role::Outline,
+        Role::Surface,
+        AA_NON_TEXT,
+        "输入框/卡片描边是 M3 定义的非文字元素，规范目标 3:1（light 实测 4.26:1、dark 5.89:1 已高于目标）",
+    ),
+    (
+        Role::OutlineVariant,
+        Role::Surface,
+        AA_NON_TEXT * 0.5,
+        "分隔线是纯装饰，M3 不要求对比度下限；light 1.62:1 / dark 1.99:1 是「几乎看不见但要能数出层级」的取值",
+    ),
+    (
+        Role::SurfaceVariant,
+        Role::Surface,
+        1.0,
+        "surface-variant 是容器色而不是前景色，不参与对比度门禁（M3 已不推荐用它做容器，保留仅为兼容旧值）",
+    ),
+];
+
+fn seeds() -> Vec<Color> {
+    vec![
+        // 出厂基线（M3 baseline 紫）
+        Color::from_hex("#6750A4").expect("基线种子"),
+        // 冷蓝（原 Fluent 强调色，用户大概率会选这一族）
+        Color::from_hex("#0078D4").expect("蓝"),
+        // 青绿
+        Color::from_hex("#006A5C").expect("青"),
+        // 暖橙（高彩度，gamut 压力大）
+        Color::from_hex("#E8710A").expect("橙"),
+        // 亮黄（最容易被白字吃掉的极端）
+        Color::from_hex("#FFD400").expect("黄"),
+        // 近灰（低彩度种子，检验 neutral 不塌）
+        Color::from_hex("#6E6E6E").expect("灰"),
+    ]
+}
+
+#[test]
+fn text_pairs_meet_wcag_aa_for_every_seed_and_flavor() {
+    let mut failures = Vec::new();
+    for seed in seeds() {
+        for flavor in [SchemeFlavor::Light, SchemeFlavor::Dark] {
+            let scheme = Scheme::from_seed(flavor, seed);
+            for (fg, bg) in TEXT_PAIRS {
+                let ratio = scheme.contrast(fg, bg);
+                if ratio < AA_TEXT {
+                    failures.push(format!(
+                        "seed {} / {} / {} on {} = {ratio:.2}",
+                        seed.to_hex(),
+                        flavor.name(),
+                        fg.name(),
+                        bg.name()
+                    ));
+                }
+            }
+        }
+    }
+    assert!(
+        failures.is_empty(),
+        "以下角色对未达 WCAG AA（4.5:1）：\n{}",
+        failures.join("\n")
+    );
+}
+
+#[test]
+fn exception_list_is_honest_about_its_thresholds() {
+    // 例外必须**真的**是「非文字级」，不能悄悄把低于 3:1 的文字对塞进来。
+    for seed in seeds() {
+        for flavor in [SchemeFlavor::Light, SchemeFlavor::Dark] {
+            let scheme = Scheme::from_seed(flavor, seed);
+            for (fg, bg, threshold, reason) in EXCEPTIONS {
+                assert!(
+                    !fg.is_foreground(),
+                    "例外 {} 不该是文字前景色（{reason}）",
+                    fg.name()
+                );
+                let ratio = scheme.contrast(fg, bg);
+                assert!(
+                    ratio >= threshold,
+                    "例外 {} on {} 实测 {ratio:.2}，低于登记阈值 {threshold}（seed {} / {}）",
+                    fg.name(),
+                    bg.name(),
+                    seed.to_hex(),
+                    flavor.name()
+                );
+            }
+        }
+    }
+}
+
+#[test]
+fn baseline_light_and_dark_both_pass() {
+    for flavor in [SchemeFlavor::Light, SchemeFlavor::Dark] {
+        let scheme = Scheme::baseline(flavor);
+        for (fg, bg) in TEXT_PAIRS {
+            let ratio = scheme.contrast(fg, bg);
+            assert!(
+                ratio >= AA_TEXT,
+                "baseline {} 的 {} on {} 只有 {ratio:.2}",
+                flavor.name(),
+                fg.name(),
+                bg.name()
+            );
+        }
+    }
+}
+
+#[test]
+fn sky_seed_candidates_meet_wcag_aa() {
+    // M70：四档默认色候选（种子 + 中性彩度）必须过同一条 26 组门禁。
+    // 中性彩度改变只影响色相/彩度，不影响 tone 轴，所以理论上恒过——这里就是要**证明**它恒过，
+    // 而不是相信它。任何一档不达标，该档直接判为不可用（不许为了好看放宽阈值）。
+    let candidates = [
+        ("① 保守蓝", "#2196F3", 6.0_f64),
+        ("② 冷调蓝", "#2196F3", 12.0),
+        ("③ 浅冷蓝", "#87CEEB", 12.0),
+        ("④ 天蓝", "#3C8DBC", 12.0),
+    ];
+    let mut failures = Vec::new();
+    let mut worst = (f32::MAX, String::new());
+    let mut checked = 0;
+    for (title, seed_hex, neutral_chroma) in candidates {
+        let seed = Color::from_hex(seed_hex).expect("候选种子");
+        let palettes =
+            unlucky_design::color::Palettes::from_seed_with_neutral_chroma(seed, neutral_chroma);
+        for flavor in [SchemeFlavor::Light, SchemeFlavor::Dark] {
+            let scheme = Scheme::from_palettes(&palettes, flavor);
+            for (fg, bg) in TEXT_PAIRS {
+                let ratio = scheme.contrast(fg, bg);
+                checked += 1;
+                if ratio < worst.0 {
+                    worst = (
+                        ratio,
+                        format!(
+                            "{title}/{} 的 {} on {}",
+                            flavor.name(),
+                            fg.name(),
+                            bg.name()
+                        ),
+                    );
+                }
+                if ratio < AA_TEXT {
+                    failures.push(format!(
+                        "{title}（{seed_hex} / 中性 {neutral_chroma}）/ {} / {} on {} = {ratio:.2}",
+                        flavor.name(),
+                        fg.name(),
+                        bg.name()
+                    ));
+                }
+            }
+        }
+    }
+    println!(
+        "候选 WCAG：{checked} 项，最紧的一对 {} = {:.2}:1（阈值 {AA_TEXT}）",
+        worst.1, worst.0
+    );
+    assert!(
+        failures.is_empty(),
+        "以下候选未达 WCAG AA（4.5:1），该档不可用：\n{}",
+        failures.join("\n")
+    );
+}
+
+#[test]
+fn accent_override_cannot_break_contrast() {
+    // 换了强调色之后，primary 族仍必须过 AA——这是「tone 轴固定」带来的结构性保证。
+    let base = Scheme::baseline(SchemeFlavor::Light);
+    for seed in seeds() {
+        let custom = Scheme::from_accent(SchemeFlavor::Light, seed);
+        for (fg, bg) in [
+            (Role::OnPrimary, Role::Primary),
+            (Role::OnPrimaryContainer, Role::PrimaryContainer),
+            (Role::OnSecondary, Role::Secondary),
+            (Role::OnTertiary, Role::Tertiary),
+        ] {
+            let ratio = custom.contrast(fg, bg);
+            assert!(
+                ratio >= AA_TEXT,
+                "强调色 {} 下 {} on {} 只有 {ratio:.2}",
+                seed.to_hex(),
+                fg.name(),
+                bg.name()
+            );
+        }
+        // 表面色不受强调色影响（这条同时是 `from_accent` 的语义断言）。
+        assert_eq!(custom.get(Role::Surface), base.get(Role::Surface));
+    }
+}
+
+#[test]
+fn outline_is_registered_as_non_text_exception() {
+    // 把「为什么 outline 不是 AA 例外失败项」钉死：它在 light 下 4.29:1（低于 4.5 但高于 3:1）。
+    let light = Scheme::baseline(SchemeFlavor::Light);
+    let ratio = light.contrast(Role::Outline, Role::Surface);
+    assert!(
+        ratio < AA_TEXT,
+        "light 的 outline 若已达 4.5 应把例外删掉：{ratio:.2}"
+    );
+    assert!(
+        ratio >= AA_NON_TEXT,
+        "light 的 outline 低于非文字 3:1：{ratio:.2}"
+    );
+}

crates/design/tests/official_accent.rs

@@ -0,0 +1,307 @@
+//! 自定义强调色 × 官方算法的**逐角色对齐**（`Scheme::from_accent`）。
+//!
+//! 期望值来自官方 Java 实现：`SchemeTonalSpot(seed, isDark, 0, SPEC_2021)` 的强调族角色。
+//! 判据：每通道误差 ≤1（见 `official_baseline.rs` 的说明）。
+//!
+//! 为什么只比强调族（primary/secondary/tertiary 共 12 个角色）：本项目的产品语义是
+//! 「换强调色不动底色」——中性表面与 error 刻意留在 baseline（见 `Palettes::with_accent`），
+//! 而官方 `from_seed` 会把中性色也染上种子色相。中性派生的正确性由本文件末尾的
+//! `from_seed_*` 用例单独验证（那一处必须与官方完全一致）。
+
+use unlucky_design::color::{Color, Role, Scheme, SchemeFlavor};
+
+/// 每通道允许的最大误差。
+const CHANNEL_TOLERANCE: i16 = 1;
+
+/// 一条官方期望值：角色 + light 色值 + dark 色值。
+type RoleRow = (Role, &'static str, &'static str);
+
+/// 一个种子 + 它 12 个强调族角色的官方色值。
+type SeedRows = (&'static str, [RoleRow; 12]);
+
+/// 八个种子：官方基线紫、纯红/绿/蓝、低彩度灰蓝、高彩度紫，外加纯黑与纯白两个边缘用例
+/// （无彩色种子的色相是病态的，官方的处理方式见 `Hct`：黑 → 色相 0、白 → 色相 209.5）。
+/// 每个种子带 12 个强调族角色的官方色值（light, dark）。
+const ACCENT_SEEDS: [SeedRows; 8] = [
+    (
+        "#6750A4",
+        [
+            (Role::Primary, "#65558F", "#CFBDFE"),
+            (Role::OnPrimary, "#FFFFFF", "#36275D"),
+            (Role::PrimaryContainer, "#E9DDFF", "#4D3D75"),
+            (Role::OnPrimaryContainer, "#4D3D75", "#E9DDFF"),
+            (Role::Secondary, "#625B71", "#CBC2DB"),
+            (Role::OnSecondary, "#FFFFFF", "#332D41"),
+            (Role::SecondaryContainer, "#E8DEF8", "#4A4458"),
+            (Role::OnSecondaryContainer, "#4A4458", "#E8DEF8"),
+            (Role::Tertiary, "#7E5260", "#EFB8C8"),
+            (Role::OnTertiary, "#FFFFFF", "#4A2532"),
+            (Role::TertiaryContainer, "#FFD9E3", "#633B48"),
+            (Role::OnTertiaryContainer, "#633B48", "#FFD9E3"),
+        ],
+    ),
+    (
+        "#FF0000",
+        [
+            (Role::Primary, "#904B40", "#FFB4A8"),
+            (Role::OnPrimary, "#FFFFFF", "#561E16"),
+            (Role::PrimaryContainer, "#FFDAD4", "#73342A"),
+            (Role::OnPrimaryContainer, "#73342A", "#FFDAD4"),
+            (Role::Secondary, "#775651", "#E7BDB6"),
+            (Role::OnSecondary, "#FFFFFF", "#442925"),
+            (Role::SecondaryContainer, "#FFDAD4", "#5D3F3B"),
+            (Role::OnSecondaryContainer, "#5D3F3B", "#FFDAD4"),
+            (Role::Tertiary, "#705C2E", "#DEC48C"),
+            (Role::OnTertiary, "#FFFFFF", "#3E2E04"),
+            (Role::TertiaryContainer, "#FBDFA6", "#564419"),
+            (Role::OnTertiaryContainer, "#564419", "#FBDFA6"),
+        ],
+    ),
+    (
+        "#00FF00",
+        [
+            (Role::Primary, "#406836", "#A5D395"),
+            (Role::OnPrimary, "#FFFFFF", "#11380B"),
+            (Role::PrimaryContainer, "#C0EFB0", "#285020"),
+            (Role::OnPrimaryContainer, "#285020", "#C0EFB0"),
+            (Role::Secondary, "#54634D", "#BBCBB2"),
+            (Role::OnSecondary, "#FFFFFF", "#263422"),
+            (Role::SecondaryContainer, "#D7E8CD", "#3C4B37"),
+            (Role::OnSecondaryContainer, "#3C4B37", "#D7E8CD"),
+            (Role::Tertiary, "#386568", "#A0CFD2"),
+            (Role::OnTertiary, "#FFFFFF", "#003739"),
+            (Role::TertiaryContainer, "#BCEBEE", "#1E4D50"),
+            (Role::OnTertiaryContainer, "#1E4D50", "#BCEBEE"),
+        ],
+    ),
+    (
+        "#0000FF",
+        [
+            (Role::Primary, "#555992", "#BEC2FF"),
+            (Role::OnPrimary, "#FFFFFF", "#272B60"),
+            (Role::PrimaryContainer, "#E0E0FF", "#3E4278"),
+            (Role::OnPrimaryContainer, "#3E4278", "#E0E0FF"),
+            (Role::Secondary, "#5C5D72", "#C5C4DD"),
+            (Role::OnSecondary, "#FFFFFF", "#2E2F42"),
+            (Role::SecondaryContainer, "#E1E0F9", "#444559"),
+            (Role::OnSecondaryContainer, "#444559", "#E1E0F9"),
+            (Role::Tertiary, "#78536B", "#E8B9D5"),
+            (Role::OnTertiary, "#FFFFFF", "#46263B"),
+            (Role::TertiaryContainer, "#FFD8EE", "#5E3C52"),
+            (Role::OnTertiaryContainer, "#5E3C52", "#FFD8EE"),
+        ],
+    ),
+    (
+        "#6E7C8A",
+        [
+            (Role::Primary, "#2B638B", "#98CCF9"),
+            (Role::OnPrimary, "#FFFFFF", "#003350"),
+            (Role::PrimaryContainer, "#CCE5FF", "#044B71"),
+            (Role::OnPrimaryContainer, "#044B71", "#CCE5FF"),
+            (Role::Secondary, "#50606F", "#B8C8D9"),
+            (Role::OnSecondary, "#FFFFFF", "#23323F"),
+            (Role::SecondaryContainer, "#D4E4F6", "#394856"),
+            (Role::OnSecondaryContainer, "#394856", "#D4E4F6"),
+            (Role::Tertiary, "#66587B", "#D1BFE7"),
+            (Role::OnTertiary, "#FFFFFF", "#372A4A"),
+            (Role::TertiaryContainer, "#ECDCFF", "#4E4162"),
+            (Role::OnTertiaryContainer, "#4E4162", "#ECDCFF"),
+        ],
+    ),
+    (
+        "#D000FF",
+        [
+            (Role::Primary, "#794F81", "#E9B5EF"),
+            (Role::OnPrimary, "#FFFFFF", "#472150"),
+            (Role::PrimaryContainer, "#FDD6FF", "#603768"),
+            (Role::OnPrimaryContainer, "#603768", "#FDD6FF"),
+            (Role::Secondary, "#6A596C", "#D6C0D6"),
+            (Role::OnSecondary, "#FFFFFF", "#3A2B3C"),
+            (Role::SecondaryContainer, "#F3DBF2", "#524153"),
+            (Role::OnSecondaryContainer, "#524153", "#F3DBF2"),
+            (Role::Tertiary, "#82524C", "#F5B7B0"),
+            (Role::OnTertiary, "#FFFFFF", "#4C2521"),
+            (Role::TertiaryContainer, "#FFDAD6", "#673B36"),
+            (Role::OnTertiaryContainer, "#673B36", "#FFDAD6"),
+        ],
+    ),
+    (
+        "#000000",
+        [
+            (Role::Primary, "#8C4A60", "#FFB1C8"),
+            (Role::OnPrimary, "#FFFFFF", "#541D32"),
+            (Role::PrimaryContainer, "#FFD9E2", "#703348"),
+            (Role::OnPrimaryContainer, "#703348", "#FFD9E2"),
+            (Role::Secondary, "#74565F", "#E3BDC6"),
+            (Role::OnSecondary, "#FFFFFF", "#422931"),
+            (Role::SecondaryContainer, "#FFD9E2", "#5A3F47"),
+            (Role::OnSecondaryContainer, "#5A3F47", "#FFD9E2"),
+            (Role::Tertiary, "#7C5635", "#EFBD94"),
+            (Role::OnTertiary, "#FFFFFF", "#48290B"),
+            (Role::TertiaryContainer, "#FFDCC1", "#623F20"),
+            (Role::OnTertiaryContainer, "#623F20", "#FFDCC1"),
+        ],
+    ),
+    (
+        "#FFFFFF",
+        [
+            (Role::Primary, "#006874", "#82D3E0"),
+            (Role::OnPrimary, "#FFFFFF", "#00363D"),
+            (Role::PrimaryContainer, "#9EEFFD", "#004F58"),
+            (Role::OnPrimaryContainer, "#004F58", "#9EEFFD"),
+            (Role::Secondary, "#4A6267", "#B1CBD0"),
+            (Role::OnSecondary, "#FFFFFF", "#1C3438"),
+            (Role::SecondaryContainer, "#CDE7EC", "#334B4F"),
+            (Role::OnSecondaryContainer, "#334B4F", "#CDE7EC"),
+            (Role::Tertiary, "#525E7D", "#BAC6EA"),
+            (Role::OnTertiary, "#FFFFFF", "#24304D"),
+            (Role::TertiaryContainer, "#DAE2FF", "#3B4664"),
+            (Role::OnTertiaryContainer, "#3B4664", "#DAE2FF"),
+        ],
+    ),
+];
+
+/// 官方 `SchemeTonalSpot(seed)` 的中性表面（surface 与 surface-container-highest，light/dark）。
+const SEED_NEUTRALS: [(&str, &str, &str, &str, &str); 8] = [
+    ("#6750A4", "#FDF7FF", "#141218", "#E6E0E9", "#36343A"),
+    ("#FF0000", "#FFF8F6", "#1A1110", "#F1DFDC", "#3D3230"),
+    ("#00FF00", "#F8FBF1", "#11140F", "#E1E4DA", "#32362F"),
+    ("#0000FF", "#FBF8FF", "#131318", "#E4E1E9", "#34343A"),
+    ("#6E7C8A", "#F7F9FF", "#101418", "#E0E2E8", "#313539"),
+    ("#D000FF", "#FFF7FA", "#171217", "#EAE0E7", "#393338"),
+    ("#000000", "#FFF8F8", "#191113", "#EFDFE1", "#3C3235"),
+    ("#FFFFFF", "#F5FAFB", "#0E1415", "#DEE3E5", "#303637"),
+];
+
+fn worst_channel(got: Color, want: Color) -> i16 {
+    [(got.r, want.r), (got.g, want.g), (got.b, want.b)]
+        .iter()
+        .map(|(a, b)| (i16::from(*a) - i16::from(*b)).abs())
+        .max()
+        .unwrap_or(0)
+}
+
+#[test]
+fn accent_schemes_match_official_on_the_accent_families() {
+    let mut worst = 0;
+    let mut off_by_one = 0;
+    let mut checked = 0;
+    let mut failures = Vec::new();
+    for (seed_hex, roles) in ACCENT_SEEDS {
+        let accent = Color::from_hex(seed_hex).expect("合法 hex");
+        for (flavor, is_dark) in [(SchemeFlavor::Light, false), (SchemeFlavor::Dark, true)] {
+            let scheme = Scheme::from_accent(flavor, accent);
+            for (role, want_light, want_dark) in roles {
+                let want_hex = if is_dark { want_dark } else { want_light };
+                let got = scheme.get(role);
+                let want = Color::from_hex(want_hex).expect("官方 hex 必须合法");
+                let delta = worst_channel(got, want);
+                worst = worst.max(delta);
+                checked += 1;
+                if delta > 0 {
+                    off_by_one += 1;
+                }
+                if delta > CHANNEL_TOLERANCE {
+                    failures.push(format!(
+                        "{seed_hex}/{}/{} 是 {}，官方 {want_hex}（差 {delta}）",
+                        flavor.name(),
+                        role.name(),
+                        got.to_hex()
+                    ));
+                }
+            }
+        }
+    }
+    assert!(
+        failures.is_empty(),
+        "{} 项强调色与官方不一致（容差 {CHANNEL_TOLERANCE}）：\n{}",
+        failures.len(),
+        failures.join("\n")
+    );
+    println!("强调色对齐：{checked} 项，最大通道误差 {worst}，非零误差 {off_by_one} 项");
+}
+
+#[test]
+fn accent_scheme_keeps_baseline_surfaces() {
+    // 产品语义：换强调色不许让底色变脏（这是 `from_accent` 与官方 `from_seed` 的唯一差别）。
+    let base = Scheme::baseline(SchemeFlavor::Light);
+    for (seed_hex, _) in ACCENT_SEEDS {
+        let accent = Color::from_hex(seed_hex).expect("合法 hex");
+        let custom = Scheme::from_accent(SchemeFlavor::Light, accent);
+        assert_eq!(custom.get(Role::Surface), base.get(Role::Surface));
+        assert_eq!(custom.get(Role::Outline), base.get(Role::Outline));
+        assert_eq!(custom.get(Role::Error), base.get(Role::Error));
+    }
+}
+
+#[test]
+fn from_seed_matches_official_neutrals() {
+    // 全量 `from_seed` 的中性派生必须与官方一致（否则「整窗染色」的色相就是错的）。
+    for (seed_hex, light_surface, dark_surface, light_highest, dark_highest) in SEED_NEUTRALS {
+        let seed = Color::from_hex(seed_hex).expect("合法 hex");
+        for (flavor, want_surface, want_highest) in [
+            (SchemeFlavor::Light, light_surface, light_highest),
+            (SchemeFlavor::Dark, dark_surface, dark_highest),
+        ] {
+            let scheme = Scheme::from_seed(flavor, seed);
+            for (role, want_hex) in [
+                (Role::Surface, want_surface),
+                (Role::SurfaceContainerHighest, want_highest),
+            ] {
+                let got = scheme.get(role);
+                let want = Color::from_hex(want_hex).expect("官方 hex 必须合法");
+                assert!(
+                    worst_channel(got, want) <= CHANNEL_TOLERANCE,
+                    "{seed_hex}/{}/{} 是 {}，官方 {want_hex}",
+                    flavor.name(),
+                    role.name(),
+                    got.to_hex()
+                );
+            }
+        }
+    }
+}
+
+#[test]
+fn from_seed_and_from_accent_agree_on_the_accent_families() {
+    // 两个入口的强调族应当逐像素相同：换种子时中性色不同，强调色只取决于种子色相。
+    for (seed_hex, _) in ACCENT_SEEDS {
+        let seed = Color::from_hex(seed_hex).expect("合法 hex");
+        for flavor in [SchemeFlavor::Light, SchemeFlavor::Dark] {
+            let by_seed = Scheme::from_seed(flavor, seed);
+            let by_accent = Scheme::from_accent(flavor, seed);
+            for role in [
+                Role::Primary,
+                Role::OnPrimary,
+                Role::PrimaryContainer,
+                Role::OnPrimaryContainer,
+                Role::Secondary,
+                Role::SecondaryContainer,
+                Role::Tertiary,
+                Role::TertiaryContainer,
+            ] {
+                assert_eq!(
+                    by_seed.get(role),
+                    by_accent.get(role),
+                    "{seed_hex}/{} 的 {} 两个入口不一致",
+                    flavor.name(),
+                    role.name()
+                );
+            }
+        }
+    }
+}
+
+#[test]
+fn accent_hue_is_not_clipped_away() {
+    // 旧缺陷②：强调色色相被 gamut 硬裁导致偏移。现在色相由 HCT 保住（只压彩度）。
+    use unlucky_design::color::Hct;
+    for (seed_hex, _) in ACCENT_SEEDS {
+        let seed = Color::from_hex(seed_hex).expect("合法 hex");
+        let seed_hue = Hct::from_color(seed).hue;
+        let primary = Scheme::from_accent(SchemeFlavor::Light, seed).get(Role::Primary);
+        let got = Hct::from_color(primary).hue;
+        let delta = (got - seed_hue).abs().min(360.0 - (got - seed_hue).abs());
+        assert!(delta < 1.0, "{seed_hex} 的 primary 色相偏了 {delta}°");
+    }
+}

crates/design/tests/official_baseline.rs

@@ -0,0 +1,198 @@
+//! 与官方 `material-color-utilities` 的**逐角色对齐**（baseline 方案）。
+//!
+//! 期望值不是「我们觉得对的颜色」，而是把官方 Java 实现（Apache-2.0）编译跑出来的结果：
+//! `new SchemeTonalSpot(Hct.fromInt(0xFF6750A4), isDark, 0.0, SpecVersion.SPEC_2021, Platform.PHONE)`
+//! 配上 `ColorSpec2021` 的 49 个动态色。跑法见 `NOTICE` 的归属声明——期望值表就是那份输出的
+//! 抄本（`seed,flavor,role,hex`）。
+//!
+//! 判据是**每通道误差 ≤1**：8 bit 量化本身就有半格误差，再加上 Java `double` 与 Rust `f64`
+//! 的末位差异，1 是「同一个算法」的合理上限；2 以上就是实现真的不一样了。
+
+use unlucky_design::color::{Color, Hct, Role, Scheme, SchemeFlavor, BASELINE_SEED};
+
+/// 每通道允许的最大误差。
+const CHANNEL_TOLERANCE: i16 = 1;
+
+/// 官方 baseline 输出（seed `#6750A4`，Tonal Spot，ColorSpec2021，contrastLevel 0）。
+const BASELINE: [(Role, &str, &str); 49] = [
+    (Role::Primary, "#65558F", "#CFBDFE"),
+    (Role::OnPrimary, "#FFFFFF", "#36275D"),
+    (Role::PrimaryContainer, "#E9DDFF", "#4D3D75"),
+    (Role::OnPrimaryContainer, "#4D3D75", "#E9DDFF"),
+    (Role::Secondary, "#625B71", "#CBC2DB"),
+    (Role::OnSecondary, "#FFFFFF", "#332D41"),
+    (Role::SecondaryContainer, "#E8DEF8", "#4A4458"),
+    (Role::OnSecondaryContainer, "#4A4458", "#E8DEF8"),
+    (Role::Tertiary, "#7E5260", "#EFB8C8"),
+    (Role::OnTertiary, "#FFFFFF", "#4A2532"),
+    (Role::TertiaryContainer, "#FFD9E3", "#633B48"),
+    (Role::OnTertiaryContainer, "#633B48", "#FFD9E3"),
+    (Role::Error, "#BA1A1A", "#FFB4AB"),
+    (Role::OnError, "#FFFFFF", "#690005"),
+    (Role::ErrorContainer, "#FFDAD6", "#93000A"),
+    (Role::OnErrorContainer, "#93000A", "#FFDAD6"),
+    (Role::Surface, "#FDF7FF", "#141218"),
+    (Role::OnSurface, "#1D1B20", "#E6E0E9"),
+    (Role::SurfaceVariant, "#E7E0EB", "#49454E"),
+    (Role::OnSurfaceVariant, "#49454E", "#CAC4CF"),
+    (Role::Background, "#FDF7FF", "#141218"),
+    (Role::OnBackground, "#1D1B20", "#E6E0E9"),
+    (Role::SurfaceDim, "#DED8E0", "#141218"),
+    (Role::SurfaceBright, "#FDF7FF", "#3B383E"),
+    (Role::SurfaceContainerLowest, "#FFFFFF", "#0F0D13"),
+    (Role::SurfaceContainerLow, "#F8F2FA", "#1D1B20"),
+    (Role::SurfaceContainer, "#F2ECF4", "#211F24"),
+    (Role::SurfaceContainerHigh, "#ECE6EE", "#2B292F"),
+    (Role::SurfaceContainerHighest, "#E6E0E9", "#36343A"),
+    (Role::Outline, "#7A757F", "#948F99"),
+    (Role::OutlineVariant, "#CAC4CF", "#49454E"),
+    (Role::InverseSurface, "#322F35", "#E6E0E9"),
+    (Role::InverseOnSurface, "#F5EFF7", "#322F35"),
+    (Role::InversePrimary, "#CFBDFE", "#65558F"),
+    (Role::Shadow, "#000000", "#000000"),
+    (Role::Scrim, "#000000", "#000000"),
+    (Role::SurfaceTint, "#65558F", "#CFBDFE"),
+    (Role::PrimaryFixed, "#E9DDFF", "#E9DDFF"),
+    (Role::PrimaryFixedDim, "#CFBDFE", "#CFBDFE"),
+    (Role::OnPrimaryFixed, "#201047", "#201047"),
+    (Role::OnPrimaryFixedVariant, "#4D3D75", "#4D3D75"),
+    (Role::SecondaryFixed, "#E8DEF8", "#E8DEF8"),
+    (Role::SecondaryFixedDim, "#CBC2DB", "#CBC2DB"),
+    (Role::OnSecondaryFixed, "#1E192B", "#1E192B"),
+    (Role::OnSecondaryFixedVariant, "#4A4458", "#4A4458"),
+    (Role::TertiaryFixed, "#FFD9E3", "#FFD9E3"),
+    (Role::TertiaryFixedDim, "#EFB8C8", "#EFB8C8"),
+    (Role::OnTertiaryFixed, "#31101D", "#31101D"),
+    (Role::OnTertiaryFixedVariant, "#633B48", "#633B48"),
+];
+
+/// 官方 `Hct.from(hue, chroma, tone)` 的色值（求解器与 gamut 映射的直接证据）。
+const HCT_PROBES: [(f64, f64, f64, &str); 12] = [
+    (95.0, 36.0, 40.0, "#705D0D"),
+    (95.0, 36.0, 90.0, "#FCE186"),
+    (95.0, 16.0, 90.0, "#F0E2BB"),
+    (96.0, 24.0, 80.0, "#D7C68D"),
+    (25.0, 84.0, 40.0, "#BA1A1A"),
+    (0.0, 0.0, 50.0, "#777777"),
+    (200.0, 120.0, 70.0, "#00BEC3"),
+    (30.0, 0.5, 98.0, "#FDF8F7"),
+    (270.0, 200.0, 10.0, "#001847"),
+    (120.0, 60.0, 99.0, "#FCFFDD"),
+    (60.0, 6.0, 6.0, "#19120C"),
+    (95.0, 36.0, 30.0, "#554500"),
+];
+
+/// 三通道里最大的绝对误差。
+fn worst_channel(got: Color, want: Color) -> i16 {
+    let pairs = [(got.r, want.r), (got.g, want.g), (got.b, want.b)];
+    pairs
+        .iter()
+        .map(|(a, b)| (i16::from(*a) - i16::from(*b)).abs())
+        .max()
+        .unwrap_or(0)
+}
+
+#[test]
+fn baseline_matches_official_on_all_forty_nine_roles() {
+    // 注意：对齐的是**官方锚点**（种子 #6750A4 + 中性彩度 6），不是产品默认（M70 起是浅冷蓝）。
+    let light = Scheme::official_baseline(SchemeFlavor::Light);
+    let dark = Scheme::official_baseline(SchemeFlavor::Dark);
+    let mut worst = 0;
+    let mut off_by_one = 0;
+    let mut failures = Vec::new();
+    for (role, want_light, want_dark) in BASELINE {
+        for (flavor, scheme, want_hex) in [
+            (SchemeFlavor::Light, light, want_light),
+            (SchemeFlavor::Dark, dark, want_dark),
+        ] {
+            let got = scheme.get(role);
+            let want = Color::from_hex(want_hex).expect("官方 hex 必须合法");
+            let delta = worst_channel(got, want);
+            worst = worst.max(delta);
+            if delta > 0 {
+                off_by_one += 1;
+            }
+            if delta > CHANNEL_TOLERANCE {
+                failures.push(format!(
+                    "{}/{} 是 {}，官方 {want_hex}（差 {delta}）",
+                    flavor.name(),
+                    role.name(),
+                    got.to_hex()
+                ));
+            }
+        }
+    }
+    assert!(
+        failures.is_empty(),
+        "{} 个角色与官方不一致（容差 {CHANNEL_TOLERANCE}）：\n{}",
+        failures.len(),
+        failures.join("\n")
+    );
+    // 把误差统计打出来（`cargo test -- --nocapture` 可见），报告里要引用。
+    println!("baseline 对齐：98 项，最大通道误差 {worst}，非零误差 {off_by_one} 项");
+}
+
+#[test]
+fn hct_solver_matches_official_color_spec_2021() {
+    for (hue, chroma, tone, want_hex) in HCT_PROBES {
+        let got = Hct::from_components(hue, chroma, tone).to_color();
+        let want = Color::from_hex(want_hex).expect("官方 hex 必须合法");
+        assert!(
+            worst_channel(got, want) <= CHANNEL_TOLERANCE,
+            "HCT({hue}, {chroma}, {tone}) 是 {}，官方 {want_hex}",
+            got.to_hex()
+        );
+    }
+}
+
+#[test]
+fn baseline_primary_is_not_the_seed_and_that_is_official() {
+    // 常见误解：官方基线的 primary 应该等于种子 #6750A4。官方不是——Tonal Spot 变体把
+    // primary 的彩度固定成 36，而 #6750A4 的 HCT 彩度是 47.86，所以 primary 被收到 #65558F。
+    // 这也是 Flutter `ColorScheme.fromSeed(0xFF6750A4)` 的 primary 值。
+    let seed = Hct::from_color(BASELINE_SEED);
+    assert!(
+        (seed.chroma - 47.856_526).abs() < 1.0e-4,
+        "种子彩度 {}",
+        seed.chroma
+    );
+    let primary = Scheme::official_baseline(SchemeFlavor::Light).get(Role::Primary);
+    assert_eq!(primary.to_hex(), "#65558F");
+    assert_ne!(primary, BASELINE_SEED);
+}
+
+#[test]
+fn baseline_tone_axis_is_still_exact_lstar() {
+    // gamut 映射只动彩度，不动 tone：每个角色的实测 L* 与它声明的 tone 相差 ≤1。
+    for flavor in [SchemeFlavor::Light, SchemeFlavor::Dark] {
+        let scheme = Scheme::official_baseline(flavor);
+        for (role, color) in scheme.iter() {
+            let tone = Scheme::tone_of(role, flavor);
+            let got = f64::from(color.lstar());
+            assert!(
+                (got - tone).abs() <= 1.0,
+                "{}/{} 的 tone 声明 {tone}、实测 {got}",
+                flavor.name(),
+                role.name()
+            );
+        }
+    }
+}
+
+#[test]
+fn same_family_containers_are_separated_by_hct_chroma() {
+    // 旧缺陷①：light 下 primary-container 与 secondary-container 撞色。
+    // 现在两者彩度不同（36 vs 16），在 tone 90 上都不会被色域裁到同一个上限。
+    let light = Scheme::official_baseline(SchemeFlavor::Light);
+    let primary = light.get(Role::PrimaryContainer);
+    let secondary = light.get(Role::SecondaryContainer);
+    assert_ne!(primary, secondary);
+    let c_primary = Hct::from_color(primary).chroma;
+    let c_secondary = Hct::from_color(secondary).chroma;
+    assert!(
+        c_secondary < c_primary,
+        "secondary-container 彩度 {c_secondary} 应低于 primary-container {c_primary}"
+    );
+    // 深层原因：tone 90 上彩度 36 装得下，所以容器色是「真的有彩度的浅色」而不是被裁到灰。
+    assert!(c_primary > 12.0, "primary-container 彩度只剩 {c_primary}");
+}

crates/design/tests/skyseed_candidates.rs

@@ -0,0 +1,341 @@
+//! M70：默认色候选（保守蓝 / 冷调蓝 / 浅冷蓝 / 天蓝）——四档的**唯一真源**与 pin。
+//!
+//! ## 这档候选到底改了什么
+//!
+//! 四档走的是**同一条** HCT 管道（`Palettes::from_seed_with_neutral_chroma` → `ColorSpec2021`
+//! tone 表 → `HctSolver` gamut 映射），差别只有两个入参：
+//!
+//! | 档 | 种子 | 种子 HCT 色相 | 中性调色板彩度 | 表面 | 主色观感 |
+//! |---|---|---|---|---|---|
+//! | ① 保守蓝 | `#2196F3` | 253.7° | 6（官方） | 近白/近黑，几乎无色 | 钢蓝 |
+//! | ② 冷调蓝 | `#2196F3` | 253.7° | 12 | 冷白/冷黑，带淡蓝调 | 钢蓝 |
+//! | ③ 浅冷蓝（备选） | `#87CEEB`（CSS `skyblue`） | 225.7° | 12 | 浅天蓝 | 偏青（teal） |
+//! | ④ 天蓝（**出厂默认，用户 2026-11-01 拍板**） | `#3C8DBC` | 239.5° | 12 | 浅天蓝 | 偏蓝的天蓝 |
+//!
+//! ③ 与 ④ 是同一件事的两种「蓝」：色相越低越偏青（teal），越高越偏钢蓝；
+//! 239.5° 正好夹在中间，主色从 ③ 的 `#0C6780` 变成 `#236488`。
+//!
+//! 两条必须知道的物理事实（写在测试里，免得下次又有人想「把主色调浅一点」）：
+//!
+//! 1. **种子彩度是废参数**：Tonal Spot 把 primary 彩度钉在 36，种子只贡献色相。
+//!    所以「低彩度天蓝种子」得到的色板与「高彩度天蓝种子」**逐像素相同**
+//!    （`seed_chroma_never_leaks_into_the_primary_ramp` 在 `palettes.rs` 里也钉了这条）。
+//!    ③ 与 ② 的真正差别是**色相**（226° vs 254°），不是彩度。
+//! 2. **primary 的 tone 被钉在 40**，所以四档主色都是「中蓝」，不会更浅。
+//!    「浅」只能落在中性色上——这就是②/③/④提高中性彩度的原因，也是本项目唯一一处
+//!    对官方 Tonal Spot 的**有意偏离**（登记在 `color` 模块文档的「出厂默认色」小节）。
+//!
+//! ## 换默认色要动哪里
+//!
+//! `palettes::DEFAULT_SEED` / `palettes::DEFAULT_NEUTRAL_CHROMA` 两行常量，
+//! 然后重跑本文件：pin 表会逐角色告诉你哪几个 hex 变了，照抄即可（pin 是**抄本**，不是推导）。
+
+use unlucky_design::color::{
+    Color, Hct, Palettes, Role, Scheme, SchemeFlavor, DEFAULT_NEUTRAL_CHROMA, DEFAULT_SEED,
+};
+
+/// 一档候选：只有两个变量（种子 + 中性彩度），其余全是官方常数。
+struct Candidate {
+    /// 短标签（色卡与 CSV 用）。
+    tag: &'static str,
+    /// 中文档名。
+    title: &'static str,
+    /// 种子 hex。
+    seed_hex: &'static str,
+    /// 中性调色板彩度（官方 Tonal Spot 是 6）。
+    neutral_chroma: f64,
+    /// 9 个展示角色的 **(角色, light, dark)** 抄本。
+    pins: [(Role, &'static str, &'static str); 9],
+}
+
+/// 四档候选（色卡 `DevDocs/ops/skyseed-candidates/` 用的就是这份数据）。
+const CANDIDATES: [Candidate; 4] = [
+    Candidate {
+        tag: "C1",
+        title: "① 保守蓝（中性彩度 6 = 官方）",
+        seed_hex: "#2196F3",
+        neutral_chroma: 6.0,
+        pins: [
+            (Role::Primary, "#36618E", "#A0CAFD"),
+            (Role::OnPrimary, "#FFFFFF", "#003258"),
+            (Role::PrimaryContainer, "#D1E4FF", "#194975"),
+            (Role::Secondary, "#535F70", "#BBC7DB"),
+            (Role::Tertiary, "#6B5778", "#D6BEE4"),
+            (Role::Surface, "#F8F9FF", "#111418"),
+            (Role::SurfaceContainerLow, "#F2F3FA", "#191C20"),
+            (Role::SurfaceContainerHighest, "#E1E2E8", "#32353A"),
+            (Role::Outline, "#73777F", "#8D9199"),
+        ],
+    },
+    Candidate {
+        tag: "C2",
+        title: "② 冷调蓝（中性彩度 12）",
+        seed_hex: "#2196F3",
+        neutral_chroma: 12.0,
+        pins: [
+            (Role::Primary, "#36618E", "#A0CAFD"),
+            (Role::OnPrimary, "#FFFFFF", "#003258"),
+            (Role::PrimaryContainer, "#D1E4FF", "#194975"),
+            (Role::Secondary, "#535F70", "#BBC7DB"),
+            (Role::Tertiary, "#6B5778", "#D6BEE4"),
+            (Role::Surface, "#F8F9FF", "#0C141E"),
+            (Role::SurfaceContainerLow, "#EEF4FF", "#141C26"),
+            (Role::SurfaceContainerHighest, "#DBE3F1", "#2D3540"),
+            (Role::Outline, "#6D7887", "#8791A1"),
+        ],
+    },
+    Candidate {
+        tag: "C3",
+        title: "③ 浅冷蓝（中性彩度 12 + 偏青天蓝种子）",
+        seed_hex: "#87CEEB",
+        neutral_chroma: 12.0,
+        pins: [
+            (Role::Primary, "#0C6780", "#89D0ED"),
+            (Role::OnPrimary, "#FFFFFF", "#003544"),
+            (Role::PrimaryContainer, "#BAEAFF", "#004D62"),
+            (Role::Secondary, "#4C626B", "#B3CAD5"),
+            (Role::Tertiary, "#5B5B7E", "#C4C3EB"),
+            (Role::Surface, "#F3FAFF", "#07151B"),
+            (Role::SurfaceContainerLow, "#E7F6FE", "#0F1D23"),
+            (Role::SurfaceContainerHighest, "#D6E5ED", "#29373D"),
+            (Role::Outline, "#687A82", "#81949C"),
+        ],
+    },
+    Candidate {
+        tag: "C4",
+        title: "④ 天蓝（中性彩度 12 + 夹在中间的天蓝种子）",
+        seed_hex: "#3C8DBC",
+        neutral_chroma: 12.0,
+        pins: [
+            (Role::Primary, "#236488", "#93CDF6"),
+            (Role::OnPrimary, "#FFFFFF", "#00344C"),
+            (Role::PrimaryContainer, "#C8E6FF", "#004C6D"),
+            (Role::Secondary, "#4F616E", "#B7C9D8"),
+            (Role::Tertiary, "#63597C", "#CDC0E9"),
+            (Role::Surface, "#F6FAFF", "#09151C"),
+            (Role::SurfaceContainerLow, "#EBF5FF", "#111D25"),
+            (Role::SurfaceContainerHighest, "#D8E4EF", "#2B363F"),
+            (Role::Outline, "#6A7985", "#84939F"),
+        ],
+    },
+];
+
+/// 四档共同点：种子的 HCT 坐标（色相是候选之间**唯一**有效的差别）。
+fn seed_hct(candidate: &Candidate) -> Hct {
+    Hct::from_color(Color::from_hex(candidate.seed_hex).expect("候选种子必须是合法 hex"))
+}
+
+/// 按候选参数走**产品同一条**派生路径。
+fn scheme(candidate: &Candidate, flavor: SchemeFlavor) -> Scheme {
+    Scheme::from_palettes(
+        &Palettes::from_seed_with_neutral_chroma(
+            seed_hct(candidate).to_color(),
+            candidate.neutral_chroma,
+        ),
+        flavor,
+    )
+}
+
+#[test]
+fn candidates_match_their_pins() {
+    let mut drift = Vec::new();
+    for candidate in &CANDIDATES {
+        for (role, want_light, want_dark) in candidate.pins {
+            for (flavor, want_hex) in [
+                (SchemeFlavor::Light, want_light),
+                (SchemeFlavor::Dark, want_dark),
+            ] {
+                let got = scheme(candidate, flavor).get(role).to_hex();
+                if got != want_hex {
+                    drift.push(format!(
+                        "{}{} / {}/{} 实测 {got}，pin {want_hex}",
+                        candidate.tag,
+                        if flavor.is_dark() { "-dark" } else { "" },
+                        candidate.title,
+                        role.name()
+                    ));
+                }
+            }
+        }
+    }
+    assert!(
+        drift.is_empty(),
+        "候选色值漂了（换默认色后请照抄下面这些 hex 到 pin 表）：\n{}",
+        drift.join("\n")
+    );
+}
+
+#[test]
+fn candidates_only_move_the_two_declared_inputs() {
+    // 「不绕算法」的证据：四档的调色板彩度与官方 Tonal Spot 逐项一致，
+    // 唯一的差别是中性彩度的入参（以及种子色相）。
+    let official = Palettes::official_baseline();
+    for candidate in &CANDIDATES {
+        let p = Palettes::from_seed_with_neutral_chroma(
+            seed_hct(candidate).to_color(),
+            candidate.neutral_chroma,
+        );
+        assert_eq!(p.primary.chroma(), official.primary.chroma());
+        assert_eq!(p.secondary.chroma(), official.secondary.chroma());
+        assert_eq!(p.tertiary.chroma(), official.tertiary.chroma());
+        assert_eq!(p.error, official.error, "error 族不该被候选影响");
+        assert_eq!(p.neutral.chroma(), candidate.neutral_chroma);
+        assert!(
+            (p.tertiary.hue_deg() - (p.primary.hue_deg() + 60.0)).abs() < 1.0e-9,
+            "{} 的 tertiary 不再是 +60°",
+            candidate.tag
+        );
+    }
+}
+
+#[test]
+fn the_candidates_are_actually_distinguishable() {
+    // 「四档不像同一档」的机器判据。注意 light 的 surface（tone 98）在 8 bit 下已经贴顶，
+    // 中性彩度 6→12 会量化到同一个 #F8F9FF——所以 ①② 的判据落在 container 系与 dark 模式上，
+    // 这也是色卡上 ①② 的差别主要体现在卡片/浮层与深色模式的原因。
+    let light = |c: &Candidate| scheme(c, SchemeFlavor::Light);
+    let dark = |c: &Candidate| scheme(c, SchemeFlavor::Dark);
+    let (c1, c2, c3, c4) = (
+        light(&CANDIDATES[0]),
+        light(&CANDIDATES[1]),
+        light(&CANDIDATES[2]),
+        light(&CANDIDATES[3]),
+    );
+    for role in [Role::SurfaceContainerLow, Role::SurfaceContainerHighest] {
+        assert_ne!(
+            c1.get(role),
+            c2.get(role),
+            "①与②的 {} 相同：中性彩度没起作用",
+            role.name()
+        );
+        assert_ne!(c2.get(role), c3.get(role), "②与③的 {} 相同", role.name());
+        // ③④ 的中性彩度相同，差别只允许来自色相
+        assert_ne!(c3.get(role), c4.get(role), "③与④的 {} 相同", role.name());
+    }
+    assert_ne!(
+        c3.get(Role::Primary),
+        c4.get(Role::Primary),
+        "③与④的主色必须真的不同（否则第 4 档白加）"
+    );
+    assert_ne!(
+        dark(&CANDIDATES[0]).get(Role::Surface),
+        dark(&CANDIDATES[1]).get(Role::Surface),
+        "深色模式的 surface 应当能看出中性彩度差别"
+    );
+    let hue_gap = |a: &Candidate, b: &Candidate| {
+        let (x, y) = (seed_hct(a).hue, seed_hct(b).hue);
+        (x - y).abs().min(360.0 - (x - y).abs())
+    };
+    assert!(
+        hue_gap(&CANDIDATES[0], &CANDIDATES[1]) < 0.01,
+        "①② 应当只差中性彩度"
+    );
+    // ③ 偏青 / ④ 居中的分界靠色相：②→③ 与 ③→④ 都要肉眼可分的量级。
+    for (i, j) in [(1, 2), (2, 3)] {
+        assert!(
+            (10.0..=40.0).contains(&hue_gap(&CANDIDATES[i], &CANDIDATES[j])),
+            "{}→{} 的色相差应当明显（10°~40°），实测 {}",
+            CANDIDATES[i].tag,
+            CANDIDATES[j].tag,
+            hue_gap(&CANDIDATES[i], &CANDIDATES[j])
+        );
+    }
+}
+
+#[test]
+fn product_default_is_the_adopted_candidate() {
+    // 用户 2026-11-01 拍板采用 **④ 天蓝**。这条用例就是「默认值 ↔ 候选表」的绑定器：
+    // 谁改了 `DEFAULT_SEED`/`DEFAULT_NEUTRAL_CHROMA` 却没同步这里（或反过来），它会立刻红。
+    // 断言一律比 **hex / 数值**，这样失败信息里直接能读到「期望 ④、实测几」。
+    let adopted = &CANDIDATES[3];
+    assert_eq!(
+        DEFAULT_SEED.to_hex(),
+        "#3C8DBC",
+        "DEFAULT_SEED 必须仍是已采用的 ④ 天蓝：期望 #3C8DBC（④），实测 {}（{}）",
+        DEFAULT_SEED.to_hex(),
+        if DEFAULT_SEED.to_hex() == CANDIDATES[2].seed_hex {
+            "③ 浅冷蓝——要改回 ③ 请连偏离登记与 pin 一起改"
+        } else {
+            "不是候选表里的任何一个种子"
+        }
+    );
+    assert_eq!(
+        DEFAULT_SEED.to_hex(),
+        adopted.seed_hex,
+        "DEFAULT_SEED（{}）与已采用档 {} 的种子（{}）不一致",
+        DEFAULT_SEED.to_hex(),
+        adopted.tag,
+        adopted.seed_hex
+    );
+    assert_eq!(
+        DEFAULT_NEUTRAL_CHROMA, 12.0,
+        "DEFAULT_NEUTRAL_CHROMA 必须仍是已采用的 12，实测 {}",
+        DEFAULT_NEUTRAL_CHROMA
+    );
+    assert_eq!(
+        DEFAULT_NEUTRAL_CHROMA, adopted.neutral_chroma,
+        "DEFAULT_NEUTRAL_CHROMA（{}）与已采用档 {} 的中性彩度（{}）不一致",
+        DEFAULT_NEUTRAL_CHROMA, adopted.tag, adopted.neutral_chroma
+    );
+    for flavor in [SchemeFlavor::Light, SchemeFlavor::Dark] {
+        let product = Scheme::baseline(flavor);
+        let expected = scheme(adopted, flavor);
+        for (role, got) in product.iter() {
+            assert_eq!(
+                got.to_hex(),
+                expected.get(role).to_hex(),
+                "产品默认与已采用档 {} 的 {}（{} 模式）不一致",
+                adopted.tag,
+                role.name(),
+                flavor.name()
+            );
+        }
+    }
+}
+
+#[test]
+fn surface_tint_stays_a_tint() {
+    // 门禁：中性彩度提高是「淡蓝调」不是「把窗口染成蓝纸」。surface 的 HCT 彩度必须
+    // 明显低于 primary 的 36，且 surface 的 Y 仍 > 0.85（浅色模式还是浅底）。
+    for candidate in &CANDIDATES {
+        let light = scheme(candidate, SchemeFlavor::Light);
+        let surface = light.get(Role::Surface);
+        let chroma = Hct::from_color(surface).chroma;
+        assert!(
+            chroma <= 1.2 * candidate.neutral_chroma,
+            "{} 的 surface 彩度 {chroma} 超过中性彩度入参的两倍",
+            candidate.tag
+        );
+        assert!(surface.relative_luminance() > 0.85);
+    }
+}
+
+#[test]
+fn dump_candidates_for_the_color_card() {
+    // 色卡脚本读的就是这两行格式（`SEED|` / `ROLE|`）。跑法：
+    //   cargo test -p unlucky-design --test skyseed_candidates -- --nocapture
+    for candidate in &CANDIDATES {
+        let hct = seed_hct(candidate);
+        println!(
+            "SEED|{}|{}|{}|{}|hue={:.2}|chroma={:.2}",
+            candidate.tag,
+            candidate.title,
+            candidate.seed_hex,
+            candidate.neutral_chroma,
+            hct.hue,
+            hct.chroma
+        );
+        for flavor in [SchemeFlavor::Light, SchemeFlavor::Dark] {
+            let s = scheme(candidate, flavor);
+            for role in Role::ALL {
+                println!(
+                    "ROLE|{}|{}|{}|{}",
+                    candidate.tag,
+                    flavor.name(),
+                    role.name(),
+                    s.get(role).to_hex().trim_start_matches('#')
+                );
+            }
+        }
+    }
+}

crates/design/tests/token_contract.rs

@@ -0,0 +1,246 @@
+//! 令牌契约测试：从**消费方视角**（只用公开 API）钉住 M61 承诺的那些性质。
+//!
+//! 这份测试的作用是「冻结」：`IconKind`/`Role` 的次序与个数、type scale 的取值、形状/高程阶梯、
+//! 描边的 SVG 语义换算。后续 iced 页面线靠它保证不会因为一次「顺手改动」而悄悄换观感。
+
+use unlucky_design::color::{Role, Scheme, SchemeFlavor, TonalPalette};
+use unlucky_design::component_map::Component;
+use unlucky_design::elevation::{Elevation, MaterialLayer};
+use unlucky_design::icons::{
+    stroke_width_for, visual_stroke_px, IconKind, IconPaint, IconSize, VIEWBOX,
+};
+use unlucky_design::motion::{
+    DurationToken, Easing, MotionScale, SPRING_EXPRESSIVE_SPATIAL_DEFAULT,
+};
+use unlucky_design::shape::ShapeScale;
+use unlucky_design::spacing::{LayoutMetrics, Space};
+use unlucky_design::typography::{FontFamily, Platform, TypeRole, Weight};
+use unlucky_design::DesignTokens;
+
+#[test]
+fn color_role_table_is_frozen() {
+    assert_eq!(Role::ALL.len(), 49, "M3 基础角色集共 49 个");
+    assert_eq!(Role::ALL[0], Role::Primary);
+    assert_eq!(Role::ALL[16], Role::Surface);
+    assert_eq!(Role::ALL[48], Role::OnTertiaryFixedVariant);
+    // 每个角色都能从两套 scheme 里取到值，且前景角色都带 on- 语义。
+    let light = Scheme::baseline(SchemeFlavor::Light);
+    let dark = Scheme::baseline(SchemeFlavor::Dark);
+    for role in Role::ALL {
+        assert!(
+            light.get(role).is_opaque(),
+            "{} 应当是不透明色",
+            role.name()
+        );
+        assert!(dark.get(role).is_opaque());
+        if role.name().starts_with("on-") {
+            assert!(role.is_foreground(), "{} 应被判为前景色", role.name());
+        }
+    }
+    assert!(light.get(Role::Primary).is_opaque());
+}
+
+#[test]
+fn tone_mapping_is_the_m3_table() {
+    // 抽查几行关键映射（light / dark），防止有人改 tone 表时静默换观感。
+    assert_eq!(Scheme::tone_of(Role::Primary, SchemeFlavor::Light), 40.0);
+    assert_eq!(Scheme::tone_of(Role::Surface, SchemeFlavor::Light), 98.0);
+    assert_eq!(Scheme::tone_of(Role::Surface, SchemeFlavor::Dark), 6.0);
+    assert_eq!(
+        Scheme::tone_of(Role::OnPrimaryContainer, SchemeFlavor::Dark),
+        90.0
+    );
+    assert_eq!(Scheme::tone_of(Role::Outline, SchemeFlavor::Light), 50.0);
+}
+
+#[test]
+fn type_scale_values_are_the_m3_baseline() {
+    assert_eq!(TypeRole::ALL.len(), 15);
+    let title = TypeRole::TitleLarge.style();
+    assert_eq!((title.size_px, title.line_height_px), (22.0, 28.0));
+    let body = TypeRole::BodyMedium.style();
+    assert_eq!((body.size_px, body.line_height_px), (14.0, 20.0));
+    assert_eq!(body.weight, Weight::Regular);
+    let label = TypeRole::LabelLarge.style();
+    assert_eq!(label.weight, Weight::Medium);
+    assert_eq!(TypeRole::BodySmall.style().size_px, 12.0);
+    // 强调档只动字重。
+    assert_eq!(TypeRole::TitleLarge.emphasized().size_px, 22.0);
+    assert!(TypeRole::TitleMedium.emphasized().weight.value() > Weight::Medium.value());
+}
+
+#[test]
+fn font_stacks_never_embed_font_files() {
+    for platform in [Platform::Windows, Platform::MacOs, Platform::Linux] {
+        for family in [FontFamily::Display, FontFamily::Text, FontFamily::Mono] {
+            let stack = platform.font_stack(family);
+            assert!(!stack.is_empty());
+            for face in stack {
+                let lower = face.family.to_ascii_lowercase();
+                for banned in [".ttf", ".otf", ".ttc", "woff", "file"] {
+                    assert!(
+                        !lower.contains(banned),
+                        "{} 的字体栈出现文件引用 {}（只允许族名，禁止内嵌受限字体）",
+                        platform.name(),
+                        face.family
+                    );
+                }
+            }
+        }
+    }
+}
+
+#[test]
+fn cjk_weight_gap_is_registered() {
+    // 中文 700（Expressive 强调档要用的）在三平台都要能找到原生落点，否则就是合成加粗降级。
+    use unlucky_design::typography::{Weight, WeightMatch};
+    // Windows：Segoe UI Variable 覆盖 700（原生）；CJK 落点是雅黑 700（原生，雅黑有 Bold）。
+    let win = Platform::Windows.resolve_weight(FontFamily::Text, Weight::Bold);
+    assert_eq!(win.quality, WeightMatch::Native);
+    assert!(Platform::Windows.cjk_face().supports(Weight::Bold));
+    // macOS：苹方只到 600 → CJK 的 700 只能合成/换族，这条 gap 已在文档登记。
+    assert!(!Platform::MacOs.cjk_face().supports(Weight::Bold));
+    // Linux：Noto Sans CJK 可变字体全覆盖。
+    for weight in [Weight::Regular, Weight::Medium, Weight::Bold] {
+        assert!(Platform::Linux.cjk_face().supports(weight));
+    }
+}
+
+#[test]
+fn icon_kind_is_frozen_and_append_only() {
+    assert_eq!(IconKind::ALL.len(), 28, "M61 冻结 28 个图标");
+    // 迁移来的 24 个必须保持原次序（序号即持久化 id）。
+    assert_eq!(IconKind::ALL[0], IconKind::Instances);
+    assert_eq!(IconKind::ALL[4], IconKind::Ai);
+    assert_eq!(IconKind::ALL[20], IconKind::More);
+    assert_eq!(IconKind::ALL[23], IconKind::User);
+    // 新增的 4 个追加在末尾。
+    assert_eq!(IconKind::ALL[24], IconKind::Refresh);
+    assert_eq!(IconKind::ALL[27], IconKind::Trash);
+    for kind in IconKind::ALL {
+        assert!(kind.icon().path.starts_with('M'));
+        assert_eq!(kind.icon().kind, kind);
+    }
+}
+
+#[test]
+fn icon_stroke_follows_svg_semantics_not_slint() {
+    // 派生式（**这条测试钉的就是它**）：`stroke = 1.5 × 24 / render_px`，1.5 是视觉线宽、24 是 viewBox。
+    //
+    // 两个锚点，一个不随本次收敛变化、一个随令牌取值：
+    // - 20px（`IconSize::Nav`，本轮没动）→ 1.5 × 24 / 20 = **1.8**
+    // - 18px（`IconSize::Button`，M86 由 16 收敛到官方 18）→ 1.5 × 24 / 18 = **2.0**
+    //
+    // ⚠️ **这条只保证「烘焙路径」**（`crates/app-iced/src/icons.rs::view_at`：按盒尺寸烘焙 SVG，
+    // 于是一个 viewBox 单位的 stroke 落到盒子后正好是 1.5 视觉像素）。
+    // 它**不**保证「24 烘焙 + 布局缩到 18」那条路径——那条会得到 `1.5 × 18/24 = 1.125px`，
+    // 正是复审 r1 P2-2 实测到的 1.04~1.25px 缺陷。所以组件侧凡是盒 ≠ `RENDER_PX`(24) 的调用点
+    // 都必须走 `view_at`（见 `icons.rs::tests::view_at_bakes_the_requested_size` 与
+    // `crates/app-iced/src/components/gate.rs` 的 Q9 扫描）。
+    //
+    // 之所以写死字面量而不写成 `stroke_width_for(IconSize::Nav.px(), 1.5)`：后者等于拿实现算实现，
+    // 派生式一旦被改坏（例如把 ×24 写成 ×20）它照样绿。写死才会红。
+    // Slint 口径（绝对 1.5px，不乘 viewBox）在这两档都会得到 1.5 —— 那正是这条要防的错。
+    let nav_width = IconKind::Settings.icon().stroke_width(IconSize::Nav.px());
+    assert!(
+        (nav_width - 1.8).abs() < 1.0e-6,
+        "20px 渲染应取 1.8 个 viewBox 单位（锚点，不随 IconSize 收敛变化）"
+    );
+    let button_width = IconKind::Settings
+        .icon()
+        .stroke_width(IconSize::Button.px());
+    assert!(
+        (button_width - 2.0).abs() < 1.0e-6,
+        "18px 渲染应取 2.0 个 viewBox 单位（M86：Button 由 16→18，旧期望 2.25 是 16px 的派生值）"
+    );
+    // 视觉宽度的往返一致性（这条是「别照抄 Slint 的 1.5」的守门测试）。
+    for size in IconSize::ALL {
+        let w = stroke_width_for(size.px(), 1.5);
+        assert!((visual_stroke_px(size.px(), w) - 1.5).abs() < 1.0e-6);
+    }
+    assert!((VIEWBOX - 24.0).abs() < f32::EPSILON);
+    // 实心图标不描边。
+    assert_eq!(IconKind::Play.icon().paint, IconPaint::Fill);
+    assert_eq!(IconKind::Play.icon().stroke_width(24.0), 0.0);
+}
+
+#[test]
+fn shape_and_elevation_ladders() {
+    assert_eq!(ShapeScale::ExtraSmall.dp(), 4.0);
+    assert_eq!(ShapeScale::Medium.dp(), 12.0);
+    assert_eq!(ShapeScale::ExtraLarge.dp(), 28.0);
+    assert_eq!(ShapeScale::Full.radius_px(40.0), 20.0);
+    assert!(ShapeScale::ExtraLargeIncreased.is_expressive());
+
+    let dp: Vec<f32> = Elevation::ALL.iter().map(|e| e.dp()).collect();
+    assert_eq!(dp, vec![0.0, 1.0, 3.0, 6.0, 8.0, 12.0]);
+    assert_eq!(
+        MaterialLayer::Card.surface_role(),
+        Role::SurfaceContainerLow
+    );
+}
+
+#[test]
+fn motion_tokens_are_usable_as_data() {
+    assert_eq!(DurationToken::Medium2.ms(), 300);
+    assert!((Easing::Standard.sample(0.0)).abs() < 1.0e-6);
+    assert!((Easing::Standard.sample(1.0) - 1.0).abs() < 1.0e-6);
+    let settle = SPRING_EXPRESSIVE_SPATIAL_DEFAULT.settle_ms(0.001);
+    assert!(settle > 0.0 && settle < 2000.0);
+    assert_eq!(MotionScale::NONE.ms(DurationToken::Long4), 0.0);
+}
+
+#[test]
+fn spacing_and_layout_metrics_are_shared() {
+    assert_eq!(Space::X4.dp(), 16.0);
+    let metrics = LayoutMetrics::DESKTOP;
+    assert_eq!(metrics.header_height(false), 56.0);
+    assert_eq!(metrics.header_height(true), 84.0);
+}
+
+#[test]
+fn component_map_covers_the_page_skeleton() {
+    // M69（G9）在末尾追加 Checkbox/Radio/Search/NavigationDrawer/Divider：20 → 25。
+    assert_eq!(Component::ALL.len(), 25);
+    for component in Component::ALL {
+        let spec = component.spec();
+        assert_eq!(spec.component, component);
+        assert!(spec.text.style().size_px >= 11.0);
+    }
+    assert_eq!(Component::PrimaryButton.spec().shape, ShapeScale::Full);
+    // 浮层必须高于卡片层。
+    assert!(Component::Dialog.spec().elevation > Component::OutlinedCard.spec().elevation);
+    // 末尾追加的 5 个不许改动既有次序。
+    assert_eq!(Component::ALL[0], Component::TopAppBar);
+    assert_eq!(Component::ALL[19], Component::EmptyState);
+}
+
+#[test]
+fn design_tokens_entry_point() {
+    let light = DesignTokens::baseline(SchemeFlavor::Light);
+    let dark = DesignTokens::baseline(SchemeFlavor::Dark);
+    assert_eq!(light.flavor, SchemeFlavor::Light);
+    assert!(light.color(Role::Surface).relative_luminance() > 0.8);
+    assert!(dark.color(Role::Surface).relative_luminance() < 0.05);
+    assert!(!light.motion_scale.is_off());
+
+    let accent = DesignTokens::with_accent(
+        SchemeFlavor::Light,
+        unlucky_design::Color::from_hex("#006A5C").unwrap(),
+    );
+    assert_ne!(accent.color(Role::Primary), light.color(Role::Primary));
+    assert_eq!(accent.color(Role::Surface), light.color(Role::Surface));
+}
+
+#[test]
+fn tonal_palette_hits_requested_tones() {
+    let palette = TonalPalette::new(150.0, 36.0);
+    for tone in [20.0_f64, 40.0, 60.0, 80.0] {
+        let color = palette.tone(tone);
+        assert!(
+            (f64::from(color.lstar()) - tone).abs() <= 1.0,
+            "tone {tone} 实际 {}",
+            color.lstar()
+        );
+    }
+}

crates/design/tests/token_pins.rs

@@ -0,0 +1,252 @@
+//! 官方数值钉死（二）：**色彩 tone 表 49 条**、7 条 easing 曲线、16 档时长、28 个图标下标、
+//! 形状阶梯，以及「同族容器不撞色」的回归（reviewer P3-2）。
+//!
+//! 期望值全部独立于实现重写；实现改一个数、表不改，这里就红。
+
+use unlucky_design::color::{Role, Scheme, SchemeFlavor};
+use unlucky_design::icons::IconKind;
+use unlucky_design::motion::{DurationToken, Easing};
+use unlucky_design::shape::ShapeScale;
+
+fn expect_tone(role: Role, light: f64, dark: f64) {
+    assert_eq!(
+        Scheme::tone_of(role, SchemeFlavor::Light),
+        light,
+        "{} 的 light tone 被改动了",
+        role.name()
+    );
+    assert_eq!(
+        Scheme::tone_of(role, SchemeFlavor::Dark),
+        dark,
+        "{} 的 dark tone 被改动了",
+        role.name()
+    );
+}
+
+#[test]
+fn all_forty_nine_tones_are_pinned() {
+    expect_tone(Role::Primary, 40.0, 80.0);
+    expect_tone(Role::OnPrimary, 100.0, 20.0);
+    expect_tone(Role::PrimaryContainer, 90.0, 30.0);
+    expect_tone(Role::OnPrimaryContainer, 30.0, 90.0);
+    expect_tone(Role::Secondary, 40.0, 80.0);
+    expect_tone(Role::OnSecondary, 100.0, 20.0);
+    expect_tone(Role::SecondaryContainer, 90.0, 30.0);
+    expect_tone(Role::OnSecondaryContainer, 30.0, 90.0);
+    expect_tone(Role::Tertiary, 40.0, 80.0);
+    expect_tone(Role::OnTertiary, 100.0, 20.0);
+    expect_tone(Role::TertiaryContainer, 90.0, 30.0);
+    expect_tone(Role::OnTertiaryContainer, 30.0, 90.0);
+    expect_tone(Role::Error, 40.0, 80.0);
+    expect_tone(Role::OnError, 100.0, 20.0);
+    expect_tone(Role::ErrorContainer, 90.0, 30.0);
+    expect_tone(Role::OnErrorContainer, 30.0, 90.0);
+    expect_tone(Role::Surface, 98.0, 6.0);
+    expect_tone(Role::OnSurface, 10.0, 90.0);
+    expect_tone(Role::SurfaceVariant, 90.0, 30.0);
+    expect_tone(Role::OnSurfaceVariant, 30.0, 80.0);
+    expect_tone(Role::Background, 98.0, 6.0);
+    expect_tone(Role::OnBackground, 10.0, 90.0);
+    expect_tone(Role::SurfaceDim, 87.0, 6.0);
+    expect_tone(Role::SurfaceBright, 98.0, 24.0);
+    expect_tone(Role::SurfaceContainerLowest, 100.0, 4.0);
+    expect_tone(Role::SurfaceContainerLow, 96.0, 10.0);
+    expect_tone(Role::SurfaceContainer, 94.0, 12.0);
+    expect_tone(Role::SurfaceContainerHigh, 92.0, 17.0);
+    expect_tone(Role::SurfaceContainerHighest, 90.0, 22.0);
+    expect_tone(Role::Outline, 50.0, 60.0);
+    expect_tone(Role::OutlineVariant, 80.0, 30.0);
+    expect_tone(Role::InverseSurface, 20.0, 90.0);
+    expect_tone(Role::InverseOnSurface, 95.0, 20.0);
+    expect_tone(Role::InversePrimary, 80.0, 40.0);
+    expect_tone(Role::Shadow, 0.0, 0.0);
+    expect_tone(Role::Scrim, 0.0, 0.0);
+    expect_tone(Role::SurfaceTint, 40.0, 80.0);
+    expect_tone(Role::PrimaryFixed, 90.0, 90.0);
+    expect_tone(Role::PrimaryFixedDim, 80.0, 80.0);
+    expect_tone(Role::OnPrimaryFixed, 10.0, 10.0);
+    expect_tone(Role::OnPrimaryFixedVariant, 30.0, 30.0);
+    expect_tone(Role::SecondaryFixed, 90.0, 90.0);
+    expect_tone(Role::SecondaryFixedDim, 80.0, 80.0);
+    expect_tone(Role::OnSecondaryFixed, 10.0, 10.0);
+    expect_tone(Role::OnSecondaryFixedVariant, 30.0, 30.0);
+    expect_tone(Role::TertiaryFixed, 90.0, 90.0);
+    expect_tone(Role::TertiaryFixedDim, 80.0, 80.0);
+    expect_tone(Role::OnTertiaryFixed, 10.0, 10.0);
+    expect_tone(Role::OnTertiaryFixedVariant, 30.0, 30.0);
+}
+
+#[test]
+fn easing_curves_are_pinned() {
+    let cases: [(Easing, f32, f32, f32, f32); 7] = [
+        (Easing::Linear, 0.0, 0.0, 1.0, 1.0),
+        (Easing::Standard, 0.2, 0.0, 0.0, 1.0),
+        (Easing::StandardDecelerate, 0.0, 0.0, 0.0, 1.0),
+        (Easing::StandardAccelerate, 0.3, 0.0, 1.0, 1.0),
+        (Easing::Emphasized, 0.2, 0.0, 0.0, 1.0),
+        (Easing::EmphasizedDecelerate, 0.05, 0.7, 0.1, 1.0),
+        (Easing::EmphasizedAccelerate, 0.3, 0.0, 0.8, 0.15),
+    ];
+    for (easing, x1, y1, x2, y2) in cases {
+        let curve = easing.curve();
+        assert_eq!(
+            (curve.x1, curve.y1, curve.x2, curve.y2),
+            (x1, y1, x2, y2),
+            "{easing:?} 的曲线参数被改动了"
+        );
+    }
+}
+
+#[test]
+fn durations_are_pinned() {
+    let cases: [(DurationToken, u32); 16] = [
+        (DurationToken::Short1, 50),
+        (DurationToken::Short2, 100),
+        (DurationToken::Short3, 150),
+        (DurationToken::Short4, 200),
+        (DurationToken::Medium1, 250),
+        (DurationToken::Medium2, 300),
+        (DurationToken::Medium3, 350),
+        (DurationToken::Medium4, 400),
+        (DurationToken::Long1, 450),
+        (DurationToken::Long2, 500),
+        (DurationToken::Long3, 550),
+        (DurationToken::Long4, 600),
+        (DurationToken::ExtraLong1, 700),
+        (DurationToken::ExtraLong2, 800),
+        (DurationToken::ExtraLong3, 900),
+        (DurationToken::ExtraLong4, 1000),
+    ];
+    for (token, ms) in cases {
+        assert_eq!(token.ms(), ms, "{} 的毫秒值被改动了", token.name());
+    }
+}
+
+#[test]
+fn spring_presets_are_pinned() {
+    use unlucky_design::motion::{
+        spring, MotionSchemeKind, Spring, SpringCategory, SpringSpeed, SPRING_EFFECTS_DEFAULT,
+        SPRING_EFFECTS_FAST, SPRING_EFFECTS_SLOW, SPRING_EXPRESSIVE_SPATIAL_DEFAULT,
+        SPRING_EXPRESSIVE_SPATIAL_FAST, SPRING_EXPRESSIVE_SPATIAL_SLOW,
+        SPRING_STANDARD_SPATIAL_DEFAULT, SPRING_STANDARD_SPATIAL_FAST,
+        SPRING_STANDARD_SPATIAL_SLOW,
+    };
+    // A 级：StandardMotionTokens / ExpressiveMotionTokens（damping = 阻尼比 ζ，stiffness = k）。
+    let cases: [(Spring, f32, f32); 9] = [
+        // standard 方案 spatial：ζ=0.9（保守）
+        (SPRING_STANDARD_SPATIAL_FAST, 1400.0, 0.9),
+        (SPRING_STANDARD_SPATIAL_DEFAULT, 700.0, 0.9),
+        (SPRING_STANDARD_SPATIAL_SLOW, 300.0, 0.9),
+        // expressive 方案 spatial：ζ=0.6/0.8（回弹明显）
+        (SPRING_EXPRESSIVE_SPATIAL_FAST, 800.0, 0.6),
+        (SPRING_EXPRESSIVE_SPATIAL_DEFAULT, 380.0, 0.8),
+        (SPRING_EXPRESSIVE_SPATIAL_SLOW, 200.0, 0.8),
+        // effects 两套同值：ζ=1.0（不过冲）
+        (SPRING_EFFECTS_FAST, 3800.0, 1.0),
+        (SPRING_EFFECTS_DEFAULT, 1600.0, 1.0),
+        (SPRING_EFFECTS_SLOW, 800.0, 1.0),
+    ];
+    for (entry, stiffness, damping_ratio) in cases {
+        assert_eq!(entry.stiffness, stiffness, "弹簧刚度被改动");
+        assert_eq!(entry.damping_ratio, damping_ratio, "弹簧阻尼比被改动");
+    }
+    // 二维表查询与常量必须一致（改了表结构也别想绕过 pin）。
+    assert_eq!(
+        spring(
+            MotionSchemeKind::Expressive,
+            SpringCategory::Spatial,
+            SpringSpeed::Default
+        ),
+        SPRING_EXPRESSIVE_SPATIAL_DEFAULT
+    );
+    assert_eq!(
+        spring(
+            MotionSchemeKind::Standard,
+            SpringCategory::Spatial,
+            SpringSpeed::Fast
+        ),
+        SPRING_STANDARD_SPATIAL_FAST
+    );
+}
+
+#[test]
+fn icon_indices_are_pinned() {
+    let names = [
+        "instances",
+        "download",
+        "logs",
+        "settings",
+        "ai",
+        "play",
+        "stop",
+        "search",
+        "plus",
+        "close",
+        "minimize",
+        "maximize",
+        "chevron-left",
+        "chevron-right",
+        "chevron-down",
+        "expand",
+        "send",
+        "check",
+        "warn",
+        "error",
+        "more",
+        "sidebar",
+        "restore",
+        "user",
+        "refresh",
+        "filter",
+        "folder",
+        "trash",
+    ];
+    assert_eq!(IconKind::ALL.len(), names.len());
+    for (i, kind) in IconKind::ALL.iter().enumerate() {
+        assert_eq!(
+            kind.name(),
+            names[i],
+            "第 {i} 个图标被换位/改名了（序号即持久化 id）"
+        );
+    }
+}
+
+#[test]
+fn shape_ladder_is_pinned() {
+    let cases: [(ShapeScale, f32); 9] = [
+        (ShapeScale::None, 0.0),
+        (ShapeScale::ExtraSmall, 4.0),
+        (ShapeScale::Small, 8.0),
+        (ShapeScale::Medium, 12.0),
+        (ShapeScale::Large, 16.0),
+        (ShapeScale::LargeIncreased, 20.0),
+        (ShapeScale::ExtraLarge, 28.0),
+        (ShapeScale::ExtraLargeIncreased, 32.0),
+        (ShapeScale::ExtraExtraLarge, 48.0),
+    ];
+    for (scale, dp) in cases {
+        assert_eq!(scale.dp(), dp, "{scale:?} 的半径档位被改动了");
+    }
+    assert_eq!(ShapeScale::Full.radius_px(64.0), 32.0);
+}
+
+#[test]
+fn same_family_containers_do_not_collide() {
+    // P3-2 回归：light 模式下 primary-container / secondary-container 曾经被 gamut 裁剪成同色。
+    let light = Scheme::baseline(SchemeFlavor::Light);
+    let primary = light.get(Role::PrimaryContainer);
+    let secondary = light.get(Role::SecondaryContainer);
+    assert_ne!(
+        primary, secondary,
+        "同族容器撞色（彩度压缩没生效）：{primary:?}"
+    );
+    // secondary-container 必须比 primary-container 更灰（M3 的「次级」语义）。
+    let c_primary = unlucky_design::color::Hct::from_color(primary).chroma;
+    let c_secondary = unlucky_design::color::Hct::from_color(secondary).chroma;
+    assert!(
+        c_secondary < c_primary,
+        "secondary-container 彩度 {c_secondary} 应低于 primary-container {c_primary}"
+    );
+    // tertiary 与 primary 也该可区分（不同色相）。
+    assert_ne!(light.get(Role::TertiaryContainer), primary);
+}

crates/design/tests/tokext_pins.rs

@@ -0,0 +1,297 @@
+//! M69（TOKEXT）的数值钉死：G9~G13 五项缺口逐条关门。
+//!
+//! 期望值全部**独立于实现重写**（照 `research/15` §18~§23 与 `00-decision-log.md` D32/D33 抄），
+//! 实现改一个数、这里不改就红。覆盖：
+//! - **G13** `ComponentRadius` 白名单 + 尺寸闸（2 不在 `ShapeScale` 里，刻度不许被加宽）；
+//! - **G11** `LayoutMetrics` 的 4 个新骨架值 + nav 语义修正；
+//! - **G10** `ComponentMetrics` 逐字段；
+//! - **G9** `Component` 25 个变体与档位表一行对一行；
+//! - **G12** 一像素线单一真源。
+
+use unlucky_design::component_map::{Component, ComponentMetrics};
+use unlucky_design::elevation::Elevation;
+use unlucky_design::icons::IconSize;
+use unlucky_design::shape::{radius_layer_for, ComponentRadius, RadiusLayer, ShapeScale};
+use unlucky_design::spacing::{stroke, LayoutMetrics, Space};
+use unlucky_design::typography::TypeRole;
+
+// ---------- G13：圆角分层（D32） ----------
+
+#[test]
+fn shape_scale_is_unchanged_and_never_contains_two() {
+    // 刻度一个字都不许动（D32 第 1 条：ShapeScale 保持严格）。
+    let ladder: [(ShapeScale, f32); 9] = [
+        (ShapeScale::None, 0.0),
+        (ShapeScale::ExtraSmall, 4.0),
+        (ShapeScale::Small, 8.0),
+        (ShapeScale::Medium, 12.0),
+        (ShapeScale::Large, 16.0),
+        (ShapeScale::LargeIncreased, 20.0),
+        (ShapeScale::ExtraLarge, 28.0),
+        (ShapeScale::ExtraLargeIncreased, 32.0),
+        (ShapeScale::ExtraExtraLarge, 48.0),
+    ];
+    for (scale, dp) in ladder {
+        assert_eq!(scale.dp(), dp, "{scale:?} 的刻度被改动了");
+        // 2 是官方 Checkbox 的圆角，但它**不在**刻度里——加进来就等于废掉 K1 守门。
+        assert_ne!(dp, 2.0, "2dp 不许进 ShapeScale（走 ComponentRadius）");
+    }
+    assert_eq!(ShapeScale::Full.radius_px(64.0), 32.0);
+}
+
+#[test]
+fn component_radius_is_a_one_item_whitelist() {
+    assert_eq!(ComponentRadius::ALL, [ComponentRadius::Micro]);
+    // 2dp 只能通过带尺寸闸的 `radius_px` 拿到（`dp()` 是 crate 内部口，外部看不见）。
+    assert_eq!(
+        ComponentRadius::Micro.radius_px(20.0),
+        Some(2.0),
+        "官方 Checkbox RadiusSize = 2.dp"
+    );
+    // 尺寸闸：>24dp 一律拿不到微半径（D32 的「只允许 ≤24dp 微控件」）。
+    assert_eq!(ComponentRadius::Micro.radius_px(24.0), Some(2.0));
+    assert_eq!(ComponentRadius::Micro.radius_px(25.0), None);
+    assert_eq!(ComponentRadius::Micro.radius_px(240.0), None);
+    assert_eq!(ComponentRadius::Micro.radius_px(0.0), None);
+    // 边长小于两倍半径时按边长一半折算（2dp 元素不能有 2dp 圆角）。
+    assert_eq!(ComponentRadius::Micro.radius_px(2.0), Some(1.0));
+}
+
+#[test]
+fn radius_layer_for_routes_by_size() {
+    assert_eq!(radius_layer_for(20.0), RadiusLayer::Component);
+    assert_eq!(radius_layer_for(24.0), RadiusLayer::Component);
+    assert_eq!(radius_layer_for(28.0), RadiusLayer::Scale);
+    assert_eq!(radius_layer_for(360.0), RadiusLayer::Scale);
+    // 抽屉/面板这类容器永远不该被判成微控件。
+    for container in [
+        LayoutMetrics::DESKTOP.nav_drawer_width,
+        LayoutMetrics::DESKTOP.ai_panel_width,
+    ] {
+        assert_eq!(radius_layer_for(container), RadiusLayer::Scale);
+    }
+}
+
+// ---------- G11：骨架值 + nav 语义修正 ----------
+
+#[test]
+fn layout_metrics_new_skeleton_values_are_pinned() {
+    let m = LayoutMetrics::DESKTOP;
+    // A 级：SearchBarTokens.ContainerHeight = 56。
+    assert_eq!(m.search_bar_height, 56.0);
+    // A 级：NavigationDrawer 下限 240（官方 ContainerWidth = 360，1180 窗下过宽，D33 取 240）。
+    assert_eq!(m.nav_drawer_width, 240.0);
+    // 12b §5.1 登记偏离：官方 rail 96 → 本项目 88。
+    assert_eq!(m.nav_rail_width, 88.0);
+    // A 级：DividerTokens.Thickness = 1.0dp（一像素线，不受 4px 栅格约束）。
+    assert_eq!(m.divider_thickness, 1.0);
+}
+
+#[test]
+fn nav_widths_mean_what_their_names_say() {
+    // D33：展开（drawer）比折叠（rail）宽；旧字段 nav_expanded_width=88 / nav_collapsed_width=48
+    // 的名字与值相反，已在 M69 改名并删除，这里钉住「新名字不会再次反向」。
+    let m = LayoutMetrics::DESKTOP;
+    assert!(
+        m.nav_drawer_width > m.nav_rail_width,
+        "展开态（drawer {}）必须比折叠态（rail {}）宽",
+        m.nav_drawer_width,
+        m.nav_rail_width
+    );
+    // rail 里 56 宽的选中指示器要放得下（88 − 2×16）。
+    assert_eq!(m.nav_rail_width - Space::X4.dp() * 2.0, 56.0);
+    // drawer 里 216 宽的指示器同样由「宽 − 2×12」推出（见 ComponentMetrics::indicator_width）。
+    assert_eq!(
+        ComponentMetrics::NAVIGATION_DRAWER.indicator_width(m.nav_drawer_width),
+        216.0
+    );
+}
+
+// ---------- G10：组件级微度量 ----------
+
+#[test]
+fn checkbox_metrics_are_pinned() {
+    let cm = ComponentMetrics::CHECKBOX;
+    // 20×20（不是 token 文件里那个死值 18，见 research/15 §26.2 矛盾 ①）。
+    assert_eq!((cm.width, cm.height), (20.0, 20.0));
+    assert_eq!(
+        cm.radius,
+        Some(ComponentRadius::Micro),
+        "圆角 2dp 走 D32 第二层"
+    );
+    assert_eq!(cm.stroke, 2.0, "CheckboxTokens.UnselectedOutlineWidth = 2");
+    assert_eq!(cm.state_layer, 40.0, "StateLayerSize = 40");
+    assert_eq!(cm.inner_dot, 0.0);
+    assert_eq!(cm.gap, Space::X2.dp(), "框 ↔ 标签 8（团队口径）");
+    assert_eq!(
+        Component::Checkbox.metrics(),
+        Some(ComponentMetrics::CHECKBOX)
+    );
+}
+
+#[test]
+fn radio_metrics_are_pinned() {
+    let cm = ComponentMetrics::RADIO;
+    assert_eq!(
+        (cm.width, cm.height),
+        (20.0, 20.0),
+        "RadioButtonTokens.IconSize = 20"
+    );
+    assert_eq!(cm.stroke, 2.0, "RadioStrokeWidth = 2.dp");
+    // 内点 10 不是 12：12 是含描边前的名义值（绘制半径 = 6 − 1 = 5）。
+    assert_eq!(cm.inner_dot, 10.0);
+    assert_eq!(cm.state_layer, 40.0);
+    assert_eq!(cm.radius, None, "radio 是真圆，圆角走 ShapeScale::Full");
+    assert_eq!(Component::Radio.spec().shape, ShapeScale::Full);
+}
+
+#[test]
+fn search_bar_metrics_are_pinned() {
+    let cm = ComponentMetrics::SEARCH_BAR;
+    // 高 56 属骨架级：CM 里必须留 0，不许重复一份。
+    assert_eq!((cm.width, cm.height), (0.0, 0.0));
+    assert_eq!(cm.icon, IconSize::Toolbar.px(), "leading/trailing 图标 24");
+    // A 级（§20.4）：图标可视左缘 16 = 文本框内容内边距 12 + `SearchBarIconOffsetX = 4`。
+    assert_eq!(cm.pad_start, Space::X3.dp(), "内容内边距 12");
+    assert_eq!(cm.icon_offset, 4.0, "SearchBarIconOffsetX = 4");
+    assert_eq!(cm.pad_start + cm.icon_offset, 16.0, "图标可视左缘必须是 16");
+    // 右侧同式：图标右缘也是 16。
+    assert_eq!(cm.pad_end, Space::X3.dp());
+    assert_eq!(cm.pad_end + cm.icon_offset, 16.0, "图标可视右缘必须是 16");
+    // 守门：不许把 pad 本身写成 16（否则 pad + offset = 20，越过 rubric 的 ±2px）。
+    assert_ne!(cm.pad_start, 16.0);
+    assert_ne!(cm.pad_end, 16.0);
+    // 搜索条圆角 = 高/2 = 28，等于官方 SearchBarCornerRadius。
+    assert_eq!(
+        ShapeScale::Full.radius_px(LayoutMetrics::DESKTOP.search_bar_height),
+        28.0
+    );
+}
+
+#[test]
+fn navigation_drawer_metrics_are_pinned() {
+    let cm = ComponentMetrics::NAVIGATION_DRAWER;
+    assert_eq!((cm.width, cm.height), (0.0, 0.0), "宽/项高属骨架级");
+    assert_eq!(
+        cm.inset, 12.0,
+        "NavigationDrawerItemDefaults.ItemPadding = 12"
+    );
+    assert_eq!(cm.pad_start, Space::X4.dp(), "项内 start 16");
+    assert_eq!(cm.pad_end, Space::X6.dp(), "项内 end 24");
+    assert_eq!(cm.icon, IconSize::Toolbar.px());
+    // 与 search bar 同一条公式：图标边 = pad + icon_offset（抽屉的 offset 是 0）。
+    assert_eq!(cm.pad_start + cm.icon_offset, 16.0, "图标起点 = 项内 start");
+    assert_eq!(cm.gap, Space::X3.dp(), "图标 ↔ label 12");
+    // 指示器宽 = 容器宽 − 24；官方 360 − 24 = 336，本项目 240 − 24 = 216。
+    assert_eq!(cm.indicator_width(360.0), 336.0);
+    assert_eq!(cm.indicator_width(240.0), 216.0);
+}
+
+#[test]
+fn component_metrics_never_duplicate_layout_metrics() {
+    // 同一量只许一份：CM 里出现的骨架级尺寸必须留 0。
+    let m = LayoutMetrics::DESKTOP;
+    for component in [Component::Search, Component::NavigationDrawer] {
+        let cm = component.metrics().expect("这两个控件必须有 CM");
+        assert_eq!(cm.width, 0.0, "{} 的宽度属 LM", component.name());
+        assert_eq!(cm.height, 0.0, "{} 的高度属 LM", component.name());
+        assert_ne!(cm.height, m.search_bar_height);
+        assert_ne!(cm.width, m.nav_drawer_width);
+    }
+    // Divider 的厚度也是 LM（一像素线）→ 它没有 CM。
+    assert_eq!(Component::Divider.metrics(), None);
+    assert_eq!(m.divider_thickness, stroke::HAIRLINE);
+}
+
+// ---------- G12：一像素线 ----------
+
+#[test]
+fn hairline_is_the_single_source_of_one_pixel_lines() {
+    assert_eq!(stroke::HAIRLINE, 1.0);
+    // 分隔线厚度直接引用它，不是另写一个字面量。
+    assert_eq!(LayoutMetrics::DESKTOP.divider_thickness, stroke::HAIRLINE);
+    // 一像素线不受 4px 栅格约束（栅格测试里显式豁免，这里反向钉一次）。
+    assert_ne!(stroke::HAIRLINE % unlucky_design::spacing::GRID, 0.0);
+}
+
+// ---------- G9：枚举 25 变体 ↔ 表槽位 ----------
+
+#[test]
+fn component_enum_is_the_frozen_twenty_five() {
+    let names = [
+        "top-app-bar",
+        "navigation-item",
+        "primary-button",
+        "secondary-button",
+        "text-button",
+        "icon-button",
+        "outlined-card",
+        "filled-card",
+        "list-item",
+        "text-field",
+        "segmented-button",
+        "chip",
+        "switch",
+        "slider",
+        "progress-indicator",
+        "dialog",
+        "menu",
+        "snackbar",
+        "tooltip",
+        "empty-state",
+        // M69 末尾追加的 5 个
+        "checkbox",
+        "radio",
+        "search",
+        "navigation-drawer",
+        "divider",
+    ];
+    assert_eq!(Component::ALL.len(), names.len(), "M66 的 G9：20 → 25");
+    for (i, component) in Component::ALL.iter().enumerate() {
+        assert_eq!(component.name(), names[i], "第 {i} 个组件被换位/改名了");
+        // 表槽位与枚举判别值一一对应（`spec()` 就是按下标取的）。
+        assert_eq!(*component as usize, i);
+        assert_eq!(component.spec().component, *component);
+    }
+}
+
+#[test]
+fn new_components_carry_the_official_elevation_and_shape() {
+    // Checkbox / Radio / Search / NavigationDrawer / Divider：全部 L0（都不是浮层）。
+    for component in [
+        Component::Checkbox,
+        Component::Radio,
+        Component::Search,
+        Component::NavigationDrawer,
+        Component::Divider,
+    ] {
+        assert_eq!(
+            component.spec().elevation,
+            Elevation::Level0,
+            "{} 不该有阴影（R4：只有浮层允许）",
+            component.name()
+        );
+    }
+    // Checkbox 的圆角真源是 micro_radius，shape 只是占位 None。
+    let checkbox = Component::Checkbox.spec();
+    assert_eq!(checkbox.micro_radius, Some(ComponentRadius::Micro));
+    assert_eq!(checkbox.shape, ShapeScale::None);
+    // 其余 4 个不碰微半径层。
+    for component in [
+        Component::Radio,
+        Component::Search,
+        Component::NavigationDrawer,
+        Component::Divider,
+    ] {
+        assert_eq!(component.spec().micro_radius, None, "{}", component.name());
+    }
+    // NavigationDrawer = CornerLargeEnd 的内侧角 16；Divider 无圆角。
+    assert_eq!(Component::NavigationDrawer.spec().shape, ShapeScale::Large);
+    assert_eq!(Component::Divider.spec().shape, ShapeScale::None);
+    // Checkbox / Radio 的标签字级是团队口径（官方无「框 + 标签」token）。
+    assert_eq!(Component::Checkbox.spec().text, TypeRole::BodyLarge);
+    assert_eq!(Component::Radio.spec().text, TypeRole::BodyLarge);
+    // Search 的字级：输入 BodyLarge、占位/辅助 BodySmall。
+    assert_eq!(Component::Search.spec().text, TypeRole::BodyLarge);
+    assert_eq!(Component::Search.spec().support, Some(TypeRole::BodySmall));
+}

crates/design/tests/type_scale_pins.rs

@@ -0,0 +1,106 @@
+//! 官方数值钉死（一）：**排版两张表**（baseline 15 档 + Expressive 强调 15 档）。
+//!
+//! 表的来源是 A 级 `androidx.compose.material3.tokens.TypeScaleTokens`（v0_103）。这里的期望值是
+//! **独立于实现重写的一份**：任何人改动 `TypeRole::style()` / `emphasized()` 的数值，都必须同时改
+//! 这张表才会同时绿——这就是「冻结」的含义（reviewer P2-1 的变异测试就是打这里）。
+
+use unlucky_design::typography::{FontFamily, TypeRole, Weight};
+
+/// baseline 单档对拍。
+fn expect_baseline(
+    role: TypeRole,
+    size: f32,
+    line_height: f32,
+    weight: Weight,
+    tracking: f32,
+    family: FontFamily,
+) {
+    let got = role.style();
+    assert_eq!(
+        (
+            got.size_px,
+            got.line_height_px,
+            got.weight,
+            got.letter_spacing_px,
+            got.family
+        ),
+        (size, line_height, weight, tracking, family),
+        "{} 的 baseline 值被改动了（官方 TypeScaleTokens）",
+        role.name()
+    );
+}
+
+/// Expressive 强调档单档对拍。
+fn expect_emphasized(role: TypeRole, size: f32, line_height: f32, weight: Weight, tracking: f32) {
+    let got = role.emphasized();
+    assert_eq!(
+        (
+            got.size_px,
+            got.line_height_px,
+            got.weight,
+            got.letter_spacing_px
+        ),
+        (size, line_height, weight, tracking),
+        "{} 的 Expressive 强调档值被改动了（官方 TypeScaleTokens *Emphasized*）",
+        role.name()
+    );
+}
+
+#[test]
+fn baseline_type_scale_matches_official_tokens() {
+    use FontFamily::{Display, Text};
+    use Weight::{Bold, Medium, Regular};
+    expect_baseline(TypeRole::DisplayLarge, 57.0, 64.0, Regular, -0.2, Display);
+    expect_baseline(TypeRole::DisplayMedium, 45.0, 52.0, Regular, 0.0, Display);
+    expect_baseline(TypeRole::DisplaySmall, 36.0, 44.0, Regular, 0.0, Display);
+    expect_baseline(TypeRole::HeadlineLarge, 32.0, 40.0, Regular, 0.0, Display);
+    expect_baseline(TypeRole::HeadlineMedium, 28.0, 36.0, Regular, 0.0, Display);
+    expect_baseline(TypeRole::HeadlineSmall, 24.0, 32.0, Regular, 0.0, Display);
+    expect_baseline(TypeRole::TitleLarge, 22.0, 28.0, Regular, 0.0, Display);
+    expect_baseline(TypeRole::TitleMedium, 16.0, 24.0, Medium, 0.2, Text);
+    expect_baseline(TypeRole::TitleSmall, 14.0, 20.0, Medium, 0.1, Text);
+    expect_baseline(TypeRole::BodyLarge, 16.0, 24.0, Regular, 0.5, Text);
+    expect_baseline(TypeRole::BodyMedium, 14.0, 20.0, Regular, 0.2, Text);
+    expect_baseline(TypeRole::BodySmall, 12.0, 16.0, Regular, 0.4, Text);
+    expect_baseline(TypeRole::LabelLarge, 14.0, 20.0, Medium, 0.1, Text);
+    expect_baseline(TypeRole::LabelMedium, 12.0, 16.0, Medium, 0.5, Text);
+    expect_baseline(TypeRole::LabelSmall, 11.0, 16.0, Medium, 0.5, Text);
+    let _ = Bold;
+}
+
+#[test]
+fn expressive_emphasis_matches_official_tokens() {
+    use Weight::{Bold, Medium};
+    // 展示/正文类强调 → Medium(500)；label 与小标题 → Bold(700)。
+    expect_emphasized(TypeRole::DisplayLarge, 57.0, 64.0, Medium, 0.0);
+    expect_emphasized(TypeRole::DisplayMedium, 45.0, 52.0, Medium, 0.0);
+    expect_emphasized(TypeRole::DisplaySmall, 36.0, 44.0, Medium, 0.0);
+    expect_emphasized(TypeRole::HeadlineLarge, 32.0, 40.0, Medium, 0.0);
+    expect_emphasized(TypeRole::HeadlineMedium, 28.0, 36.0, Medium, 0.0);
+    expect_emphasized(TypeRole::HeadlineSmall, 24.0, 32.0, Medium, 0.0);
+    expect_emphasized(TypeRole::TitleLarge, 22.0, 28.0, Medium, 0.0);
+    expect_emphasized(TypeRole::TitleMedium, 16.0, 24.0, Bold, 0.15);
+    expect_emphasized(TypeRole::TitleSmall, 14.0, 20.0, Bold, 0.1);
+    expect_emphasized(TypeRole::BodyLarge, 16.0, 24.0, Medium, 0.15);
+    expect_emphasized(TypeRole::BodyMedium, 14.0, 20.0, Medium, 0.25);
+    expect_emphasized(TypeRole::BodySmall, 12.0, 16.0, Medium, 0.4);
+    expect_emphasized(TypeRole::LabelLarge, 14.0, 20.0, Bold, 0.1);
+    expect_emphasized(TypeRole::LabelMedium, 12.0, 16.0, Bold, 0.5);
+    expect_emphasized(TypeRole::LabelSmall, 11.0, 16.0, Bold, 0.5);
+}
+
+#[test]
+fn both_tables_cover_all_fifteen_roles() {
+    // 防止「表里少写一档」：15 个角色都必须被上面两张表摸到。
+    let mut names = std::collections::BTreeSet::new();
+    for role in TypeRole::ALL {
+        names.insert(role.name());
+        assert_ne!(
+            role.style(),
+            role.emphasized(),
+            "{} 强调档等同 baseline",
+            role.name()
+        );
+    }
+    assert_eq!(names.len(), 15);
+}