/* ============================================
   yuSnip — 深邃蓝调 · 铅笔线条 · 2026 v2
   背景：渐变蓝  文字：暖米白
   新增：软件界面 mockup · 对比表 · 下载增强
   ============================================ */

:root {
  /* 主蓝色系 — 降低饱和度，更沉稳 */
  --blue: #3A18D6;
  --blue-light: #6B4DFF;
  --blue-mid: #2A10A8;
  --blue-deep: #160866;
  --blue-darker: #0A0438;
  --blue-glow: rgba(107, 77, 255, 0.3);

  /* 板块背景色系 — 从上到下逐层加深 */
  --s-hero: #2A10A8;
  --s-showcase: #1A0B66;
  --s-overview: #170A5D;
  --s-promise: #140854;
  --s-features: #10074A;
  --s-download: #0D0641;
  --s-footer: #0A0438;

  /* 文字色 — 暖米白，对比更柔和 */
  --cream: #F8F2ED;
  --cream-soft: rgba(248, 242, 237, 0.72);
  --cream-dim: rgba(248, 242, 237, 0.5);
  --cream-faint: rgba(248, 242, 237, 0.22);

  /* 线条与边框 */
  --line: rgba(248, 242, 237, 0.12);
  --line-strong: rgba(248, 242, 237, 0.25);

  /* 强调色 */
  --accent: #D46060;
  --accent-2: #C9A96E;
  --green: #7BBA7B;

  /* 软件真实色（来自源码 Colors.axaml，用于 mockup 内部） */
  --ui-bg: #202020;
  --ui-panel: #2B2B2B;
  --ui-card: #333333;
  --ui-border: #404040;
  --ui-separator: rgba(255, 255, 255, 0.19);
  --ui-text: #FFFFFF;
  --ui-text-dim: #C5C5C5;
  --ui-accent: #4219F2;
  --ui-hover: rgba(255, 255, 255, 0.08);

  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mincho: 'Shippori Mincho', 'Noto Serif SC', serif;
  --font-en: 'Cormorant Garamond', 'Shippori Mincho', serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  background: var(--s-footer);
  background-attachment: fixed;
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.8;
  overflow-x: hidden;
  letter-spacing: 0.01em;
}

::selection { background: var(--cream); color: var(--blue); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

kbd {
  display: inline-block; padding: 1px 7px;
  font-family: var(--font-sans); font-size: 0.8em; font-weight: 500;
  background: rgba(245, 237, 233, 0.12); border: 1px solid var(--line-strong);
  border-radius: 4px; color: var(--cream); line-height: 1.5;
}
code {
  font-family: var(--font-mono); font-size: 0.85em;
  background: rgba(245, 237, 233, 0.1); padding: 1px 5px; border-radius: 3px;
}

/* ====== Pencil Line Animation ====== */
.pencil-line {
  stroke-dasharray: var(--len, 500);
  stroke-dashoffset: var(--len, 500);
  transition: stroke-dashoffset 1.8s var(--ease-out);
  transition-delay: var(--delay, 0s);
}
.pencil-line.--draw { stroke-dashoffset: 0; }

/* ====== Reveal Animation ====== */
[data-reveal] {
  opacity: 0; transform: translateY(28px);
  transition: opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out);
  transition-delay: var(--d, 0s);
}
[data-reveal].--in { opacity: 1; transform: translateY(0); }

/* ====== Loader ====== */
.loader {
  position: fixed; inset: 0; z-index: 9999;
  background: linear-gradient(180deg, var(--blue) 0%, var(--blue-mid) 100%);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.8s var(--ease), visibility 0.8s var(--ease);
}
.loader.--off { opacity: 0; visibility: hidden; }
.loader__inner { animation: loaderSpin 1.2s var(--ease) infinite; }
.loader__rect { animation: loaderPulse 1.2s var(--ease) infinite; }
.loader__dot--1 { animation: loaderDot 1.2s var(--ease) infinite; }
.loader__dot--2 { animation: loaderDot 1.2s var(--ease) 0.3s infinite; }
.loader__dot--3 { animation: loaderDot 1.2s var(--ease) 0.6s infinite; }
.loader__dot--4 { animation: loaderDot 1.2s var(--ease) 0.9s infinite; }
@keyframes loaderSpin { 0%,100% { transform: rotate(0); } 50% { transform: rotate(180deg); } }
@keyframes loaderPulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }
@keyframes loaderDot { 0%,100% { transform: scale(1); } 50% { transform: scale(0.5); } }

/* ====== Buttons ====== */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 28px; border-radius: 6px; font-size: 15px; font-weight: 500; letter-spacing: 0.02em; transition: all 0.3s var(--ease); cursor: pointer; white-space: nowrap; }
.btn--primary { background: var(--cream); color: var(--blue); }
.btn--primary:hover { background: #fff; transform: translateY(-2px); }
.btn--ghost { border: 1px solid var(--line-strong); color: var(--cream); }
.btn--ghost:hover { background: rgba(245,237,233,0.1); }

/* ====== Navigation ====== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 40px;
  transition: background 0.5s var(--ease), padding 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.nav.--scrolled {
  background: rgba(26, 10, 90, 0.85);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  padding: 12px 40px; box-shadow: 0 1px 0 var(--line);
}
.nav__brand { display: flex; align-items: center; gap: 8px; font-family: var(--font-en); font-size: 22px; font-weight: 600; letter-spacing: 0.02em; }
.nav__brand svg { color: var(--cream); }
.nav__links { display: flex; gap: 32px; }
.nav__link { font-family: var(--font-sans); font-size: 15px; font-weight: 500; position: relative; opacity: 0.75; transition: opacity 0.3s; display: inline-flex; align-items: baseline; gap: 5px; }
.nav__link em { font-family: var(--font-en); font-style: italic; font-size: 13px; font-weight: 400; opacity: 0.7; }
.nav__link:hover { opacity: 1; }
.nav__link::after { content: ''; position: absolute; bottom: -4px; left: 0; right: 0; height: 1px; background: var(--cream); transform: scaleX(0); transform-origin: right; transition: transform 0.4s var(--ease); }
.nav__link:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__right { display: flex; align-items: center; gap: 16px; }
.nav__badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border: 1px solid var(--line-strong); border-radius: 16px; font-family: var(--font-en); font-size: 13px; opacity: 0.85; transition: all 0.3s var(--ease); }
.nav__badge:hover { opacity: 1; background: rgba(245,237,233,0.08); border-color: var(--cream-soft); }
.nav__toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 8px; }
.nav__toggle span { width: 22px; height: 2px; background: var(--cream); transition: transform 0.3s, opacity 0.3s; }
.nav__toggle.--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.--open span:nth-child(2) { transform: translateY(-7px) rotate(-45deg); }

/* ====== HERO ====== */
.hero {
  min-height: 100vh; display: flex; flex-direction: column;
  position: relative; padding: 72px 60px 32px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(107, 77, 255, 0.25) 0%, transparent 55%),
    var(--s-hero);
}
.hero__topline {
  position: absolute; top: 0; left: 60px; right: 60px;
  height: 1px; background: var(--line); z-index: 1;
}
.hero__corner {
  position: absolute; top: 84px; z-index: 3;
  display: flex; align-items: baseline; gap: 6px;
  font-family: var(--font-en); font-size: 11px;
  letter-spacing: 0.15em; text-transform: uppercase;
}
.hero__corner--tl { left: 60px; }
.hero__corner--tr { right: 60px; }
.hero__corner-id { color: var(--cream); font-weight: 500; }
.hero__corner-label { color: var(--cream-faint); font-weight: 400; }

/* 主网格：左右分栏（左大右小 7:5） */
.hero__grid {
  flex: 0 1 auto; display: grid; grid-template-columns: 7fr 5fr;
  gap: 50px; align-items: center;
  max-width: 1320px; width: 100%; margin: auto auto 24px;
  position: relative; z-index: 2;
}

/* 左：品牌（绝对主体） — 左对齐排版 */
.hero__brand {
  max-width: 660px;
}

.hero__eyebrow {
  display: flex; align-items: center; gap: 18px;
  font-family: var(--font-mincho); font-size: 12px; font-weight: 500;
  letter-spacing: 0.3em; color: var(--cream-soft);
  text-transform: uppercase;
  margin-bottom: 40px;
}
.hero__eyebrow-line { display: inline-block; width: 44px; height: 1px; background: var(--accent-2); flex-shrink: 0; }

.hero__title {
  font-family: var(--font-en); font-size: clamp(88px, 13.5vw, 184px);
  font-weight: 700; line-height: 0.86; letter-spacing: -0.038em;
  margin-bottom: 2px; color: var(--cream);
}

/* 标题下英文小字 — 琥珀色斜体，编辑感过渡 */
.hero__title-en {
  font-family: var(--font-en); font-size: clamp(15px, 1.3vw, 18px);
  font-style: italic; font-weight: 400; color: var(--accent-2);
  letter-spacing: 0.03em; margin-bottom: 44px;
  padding-left: 6px;
}

.hero__subtitle {
  font-family: var(--font-mincho); font-size: clamp(24px, 2.8vw, 38px);
  font-weight: 600; letter-spacing: 0.12em; color: var(--cream);
  margin-bottom: 28px; line-height: 1.4;
  padding-left: 2px;
}

/* 标语 — 左侧琥珀竖线，引言感 */
.hero__tagline {
  font-family: var(--font-mincho); font-size: 15px; line-height: 1.85;
  color: var(--cream-soft); margin-bottom: 0; letter-spacing: 0.05em;
  max-width: 460px;
  padding-left: 16px;
  border-left: 1px solid var(--accent-2);
  white-space: nowrap;
}

/* CTA — 脱离左右结构，居中 */
.hero__cta {
  display: flex; gap: 14px; justify-content: center;
  margin-top: 80px;
}

/* 右：双窗口叠加 + 画笔涂鸦 */
.hero__stage {
  position: relative; display: flex; justify-content: center; align-items: center;
  min-height: 420px;
}
.hero__canvas {
  position: relative; width: 100%; max-width: 440px; aspect-ratio: 1/1;
}
/* 左上窗口（后景） */
.hero__win--back {
  position: absolute; inset: 6% 30% 30% 4%;
  background: #202020; border-radius: 10px; overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,0.45), 0 0 0 1px rgba(248,242,237,0.06);
  z-index: 1;
}
/* 右下窗口（前景，叠在后景上） */
.hero__win--front {
  position: absolute; inset: 40% 4% 6% 30%;
  background: #202020; border-radius: 10px; overflow: hidden;
  box-shadow: 0 30px 60px rgba(0,0,0,0.55), 0 0 0 1px rgba(248,242,237,0.08);
  z-index: 2;
}
/* 窗口通用 */
.hero__win-bar { display: flex; align-items: center; gap: 6px; padding: 8px 12px; background: #161616; }
.hero__win-bar > span { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.hero__win-bar > span:nth-child(1) { background: #FF5F57; }
.hero__win-bar > span:nth-child(2) { background: #FEBC2E; }
.hero__win-bar > span:nth-child(3) { background: #28C840; }

.hero__win-body { padding: 22px 20px; display: flex; flex-direction: column; gap: 14px; }
.hero__win-line { height: 7px; background: #3a3a3a; border-radius: 3px; }
.hero__win-line--title { width: 55%; height: 11px; background: #4a4a4a; }
.hero__win-line--sub { width: 80%; }
.hero__win-line--short { width: 40%; }
.hero__win-block { height: 40px; background: #2d2d2d; border-radius: 6px; margin-top: 6px; width: 70%; }

/* 右下窗口：截图动画区 */
.hero__cap { position: relative; width: 100%; height: calc(100% - 26px); overflow: hidden; background: #1a1a2e; }
/* 模拟桌面 */
.hero__cap-desktop { position: absolute; inset: 0; }
.hero__cap-dock { position: absolute; bottom: 6px; left: 50%; transform: translateX(-50%); width: 50%; height: 6px; background: rgba(255,255,255,0.08); border-radius: 3px; }
.hero__cap-icon { position: absolute; width: 16px; height: 16px; background: rgba(255,255,255,0.12); border-radius: 3px; top: 12px; left: 12px; }
.hero__cap-icon--2 { left: 34px; background: rgba(255,255,255,0.08); }
.hero__cap-icon--3 { left: 56px; background: rgba(255,255,255,0.06); }

/* 遮罩层 */
.hero__cap-overlay {
  position: absolute; inset: 0; background: rgba(0,0,0,0.55);
  opacity: 0;
  animation: capOverlay 4s infinite var(--ease);
}
/* 选区框 */
.hero__cap-sel {
  position: absolute; left: 25%; top: 25%;
  width: 0; height: 0;
  border: 1.5px solid #4219F2;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.3);
  opacity: 0;
  animation: capSel 4s infinite var(--ease);
}
.hero__cap-h { position: absolute; width: 5px; height: 5px; background: #fff; border: 1px solid #4219F2; border-radius: 1px; }
.hero__cap-h--tl { left: -3px; top: -3px; }
.hero__cap-h--tr { right: -3px; top: -3px; }
.hero__cap-h--bl { left: -3px; bottom: -3px; }
.hero__cap-h--br { right: -3px; bottom: -3px; }
.hero__cap-size {
  position: absolute; top: -20px; right: 0;
  font-family: var(--font-mono); font-size: 8px; color: #fff;
  background: #4219F2; padding: 2px 5px; border-radius: 2px;
  white-space: nowrap; opacity: 0;
  animation: capSize 4s infinite var(--ease);
}
/* 光标 */
.hero__cap-cursor {
  position: absolute; left: 25%; top: 25%;
  width: 0; height: 0;
  opacity: 0;
  animation: capCursor 4s infinite var(--ease);
}
.hero__cap-cursor::before {
  content: ""; position: absolute; left: 0; top: 0;
  width: 0; height: 0;
  border-left: 6px solid #fff;
  border-top: 4px solid #fff;
  border-bottom: 4px solid transparent;
  border-right: 4px solid transparent;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.5));
}

/* 截图动画 keyframes — 4秒循环 */
@keyframes capOverlay {
  0%, 12% { opacity: 0; }
  20% { opacity: 0.55; }
  72% { opacity: 0.55; }
  82% { opacity: 0; }
  100% { opacity: 0; }
}
@keyframes capSel {
  0%, 12% { width: 0; height: 0; left: 25%; top: 25%; opacity: 0; }
  18% { width: 0; height: 0; left: 25%; top: 25%; opacity: 1; }
  60% { width: 50%; height: 50%; left: 25%; top: 25%; opacity: 1; }
  72% { width: 50%; height: 50%; left: 25%; top: 25%; opacity: 1; }
  82% { width: 50%; height: 50%; left: 25%; top: 25%; opacity: 0; }
  100% { width: 0; height: 0; left: 25%; top: 25%; opacity: 0; }
}
@keyframes capCursor {
  0% { left: 10%; top: 12%; opacity: 0; }
  8% { left: 10%; top: 12%; opacity: 1; }
  12% { left: 25%; top: 25%; opacity: 1; }
  60% { left: 75%; top: 75%; opacity: 1; }
  72% { left: 75%; top: 75%; opacity: 1; }
  82% { left: 75%; top: 75%; opacity: 0; }
  100% { left: 10%; top: 12%; opacity: 0; }
}
@keyframes capSize {
  0%, 24% { opacity: 0; }
  30% { opacity: 1; }
  72% { opacity: 1; }
  82% { opacity: 0; }
  100% { opacity: 0; }
}

/* 画笔涂鸦层（覆盖在暗色界面上） */
.hero__doodle {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: 2; pointer-events: none;
}

/* 浮动小色块（暗示取色） */
.hero__swatch-float {
  position: absolute; right: 6%; top: 4%; z-index: 3;
  display: flex; align-items: center; gap: 8px;
  background: #202020; padding: 6px 10px 6px 6px; border-radius: 6px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.4), 0 0 0 1px rgba(248,242,237,0.08);
}
.hero__swatch-color { width: 20px; height: 20px; border-radius: 4px; background: #4219F2; }
.hero__swatch-hex { font-family: var(--font-mono); font-size: 10px; color: #fff; font-weight: 600; }

/* 底部信息条 */
.hero__footer {
  display: grid; grid-template-columns: 1fr auto 1fr;
  align-items: center; gap: 40px;
  padding-top: 28px; margin-top: auto;
  border-top: 1px solid var(--line);
  max-width: 1280px; width: 100%; margin-left: auto; margin-right: auto;
  position: relative; z-index: 2;
}
.hero__footer-left, .hero__footer-right { display: flex; align-items: baseline; gap: 10px; }
.hero__footer-right { justify-content: flex-end; }
.hero__footer-label { font-family: var(--font-en); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--cream-faint); }
.hero__footer-val { font-family: var(--font-en); font-size: 12px; letter-spacing: 0.08em; color: var(--cream-soft); font-weight: 500; }
.hero__footer-center { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.hero__scroll-text { font-family: var(--font-en); font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--cream-dim); }
.hero__scroll-line { width: 1px; height: 32px; background: var(--cream-faint); position: relative; overflow: hidden; }
.hero__scroll-line::after { content: ''; position: absolute; top: -100%; left: 0; width: 100%; height: 50%; background: var(--accent-2); animation: scrollDown 2.4s var(--ease) infinite; }
@keyframes scrollDown { 0% { top: -50%; } 100% { top: 150%; } }

/* ====== Section Label (with pencil underline) ====== */
.sect-label {
  font-family: var(--font-en); font-size: 20px; font-weight: 400;
  letter-spacing: 0.3em; color: var(--cream-dim); text-transform: lowercase;
  margin-bottom: 60px; position: relative; display: inline-block;
}
.sect-label svg { position: absolute; bottom: -14px; left: -8px; width: calc(100% + 16px); height: 18px; }

/* ====== SHOWCASE 截图界面展示（第二屏）====== */
.showcase {
  padding: 120px 40px 80px;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(201, 169, 110, 0.08) 0%, transparent 55%),
    var(--s-showcase);
}
.showcase__inner { max-width: 1080px; margin: 0 auto; }
.showcase__head { text-align: center; margin-bottom: 60px; }
.showcase__title {
  font-family: var(--font-mincho); font-size: clamp(28px, 4vw, 44px); font-weight: 700;
  margin-bottom: 16px; letter-spacing: 0.05em;
}
.showcase__desc { font-size: 15px; color: var(--cream-soft); line-height: 1.9; max-width: 580px; margin: 0 auto; }

.showcase__mock { position: relative; width: 100%; max-width: 960px; margin: 0 auto; }
.showcase__frame { border-radius: 12px; }

/* 标注（琥珀色，区别于米白） */
.showcase__mock-tag {
  position: absolute; display: flex; align-items: center; gap: 8px;
  font-family: var(--font-en); font-size: 13px; z-index: 5; pointer-events: none;
  color: var(--accent-2); /* 琥珀色 */
}
.showcase__mock-tag--1 { top: 12%; right: -130px; }
.showcase__mock-tag--2 { top: 42%; left: -130px; flex-direction: row-reverse; }
.showcase__mock-tag--3 { bottom: 16%; right: -120px; }
.showcase__mock-num { font-size: 14px; color: var(--accent-2); letter-spacing: 0.1em; opacity: 0.7; }
.showcase__mock-label { color: var(--cream-soft); letter-spacing: 0.05em; }

/* 截图光标 */
.showcase__cursor {
  position: absolute; z-index: 6; pointer-events: none;
}
.showcase__cursor::before {
  content: ''; position: absolute; left: 0; top: 0;
  border-left: 14px solid #fff; border-top: 9px solid #fff;
  border-bottom: 9px solid transparent; border-right: 9px solid transparent;
  filter: drop-shadow(0 1px 3px rgba(0,0,0,0.6));
}

/* 画笔笔触 */
.showcase__brush {
  position: absolute; inset: 12% 8% 22% 8%; z-index: 3; pointer-events: none;
}
.showcase__brush path {
  stroke-dasharray: 400; stroke-dashoffset: 400;
}

/* 工具栏/选项栏居中 */
.showcase__mock .ui-mock__toolbar,
.showcase__mock .ui-mock__optionsbar { left: 50%; }

/* ====== 截图动态动效（8s 循环）======
   0-10%  光标进入
   10-18% 屏幕变暗
   18-38% 拖拽选区
   38-60% 内容/放大镜/工具栏渐入
   60-82% 画笔绘制
   85-100% 淡出重置                              */
.showcase__mock .ui-mock__overlay { animation: scOverlay 8s var(--ease) infinite; }
.showcase__mock .ui-mock__sel { animation: scSel 8s var(--ease) infinite; }
.showcase__mock .ui-mock__size { animation: scSize 8s var(--ease) infinite; }
.showcase__mock .ui-mock__sel-content { animation: scContent 8s var(--ease) infinite; }
.showcase__mock .showcase__cursor { animation: scCursor 8s var(--ease) infinite; }
.showcase__mock .ui-mock__mag { animation: scMag 8s var(--ease) infinite; }
.showcase__mock .ui-mock__toolbar { animation: scToolbar 8s var(--ease) infinite; }
.showcase__mock .ui-mock__optionsbar { animation: scOptionsbar 8s var(--ease) infinite; }
.showcase__mock .showcase__brush { animation: scBrushFade 8s var(--ease) infinite; }
.showcase__mock .showcase__brush path { animation: scBrushDraw 8s var(--ease) infinite; }
.showcase__mock .showcase__mock-tag { animation: scTagFade 8s var(--ease) infinite; }

@keyframes scOverlay {
  0%, 10% { opacity: 0; }
  18% { opacity: 0.45; }
  30% { opacity: 0; }
  100% { opacity: 0; }
}
@keyframes scSel {
  0%, 14% { width: 0; height: 0; opacity: 0; box-shadow: 0 0 0 9999px rgba(0,0,0,0); }
  18% { width: 0; height: 0; opacity: 1; box-shadow: 0 0 0 9999px rgba(0,0,0,0); }
  38% { width: 56%; height: 64%; opacity: 1; box-shadow: 0 0 0 9999px rgba(0,0,0,0.45); }
  85% { width: 56%; height: 64%; opacity: 1; box-shadow: 0 0 0 9999px rgba(0,0,0,0.45); }
  100% { width: 0; height: 0; opacity: 0; box-shadow: 0 0 0 9999px rgba(0,0,0,0); }
}
@keyframes scSize {
  0%, 19% { opacity: 0; }
  23% { opacity: 1; }
  85% { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes scContent {
  0%, 40% { opacity: 0; }
  48% { opacity: 1; }
  85% { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes scCursor {
  0%, 5% { opacity: 0; left: 22%; top: 18%; }
  8% { opacity: 1; left: 22%; top: 18%; }
  18% { opacity: 1; left: 22%; top: 18%; }
  38% { opacity: 1; left: 76%; top: 80%; }
  42% { opacity: 0; left: 76%; top: 80%; }
  100% { opacity: 0; left: 22%; top: 18%; }
}
@keyframes scMag {
  0%, 44% { opacity: 0; transform: translateX(8px); }
  52% { opacity: 1; transform: translateX(0); }
  85% { opacity: 1; transform: translateX(0); }
  100% { opacity: 0; transform: translateX(8px); }
}
@keyframes scToolbar {
  0%, 48% { opacity: 0; transform: translateX(-50%) translateY(14px); }
  56% { opacity: 1; transform: translateX(-50%) translateY(0); }
  85% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(14px); }
}
@keyframes scOptionsbar {
  0%, 52% { opacity: 0; transform: translateX(-50%) translateY(14px); }
  60% { opacity: 1; transform: translateX(-50%) translateY(0); }
  85% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(14px); }
}
@keyframes scBrushFade {
  0%, 60% { opacity: 0; }
  64% { opacity: 1; }
  85% { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes scBrushDraw {
  0%, 60% { stroke-dashoffset: 400; }
  82% { stroke-dashoffset: 0; }
  85% { stroke-dashoffset: 0; }
  92% { stroke-dashoffset: 400; }
  100% { stroke-dashoffset: 400; }
}
@keyframes scTagFade {
  0%, 58% { opacity: 0; }
  66% { opacity: 0.9; }
  85% { opacity: 0.9; }
  100% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .showcase__mock .ui-mock__overlay,
  .showcase__mock .ui-mock__sel,
  .showcase__mock .ui-mock__size,
  .showcase__mock .ui-mock__sel-content,
  .showcase__mock .showcase__cursor,
  .showcase__mock .ui-mock__mag,
  .showcase__mock .ui-mock__toolbar,
  .showcase__mock .ui-mock__optionsbar,
  .showcase__mock .showcase__brush,
  .showcase__mock .showcase__brush path,
  .showcase__mock .showcase__mock-tag { animation: none !important; }
  .showcase__mock .ui-mock__overlay { opacity: 0; }
  .showcase__mock .ui-mock__sel { width: 56%; height: 64%; opacity: 1; box-shadow: 0 0 0 9999px rgba(0,0,0,0.45); }
  .showcase__mock .ui-mock__size { opacity: 1; }
  .showcase__mock .ui-mock__sel-content { opacity: 1; }
  .showcase__mock .showcase__cursor { opacity: 0; }
  .showcase__mock .ui-mock__mag { opacity: 1; }
  .showcase__mock .ui-mock__toolbar { opacity: 1; transform: translateX(-50%); }
  .showcase__mock .ui-mock__optionsbar { opacity: 1; transform: translateX(-50%); }
  .showcase__mock .showcase__brush { opacity: 1; }
  .showcase__mock .showcase__brush path { stroke-dashoffset: 0; }
  .showcase__mock .showcase__mock-tag { opacity: 0.9; }
  .hero__cap-overlay,
  .hero__cap-sel,
  .hero__cap-cursor,
  .hero__cap-size { animation: none; }
  .hero__cap-overlay { opacity: 0.55; }
  .hero__cap-sel { width: 50%; height: 50%; left: 25%; top: 25%; opacity: 1; }
  .hero__cap-size { opacity: 1; }
}

/* ====== CONCEPT ====== */
.concept { padding: 160px 40px; background: var(--s-overview); }
.concept__inner { max-width: 960px; margin: 0 auto; }
.concept__body { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.concept__lead { font-family: var(--font-mincho); font-size: clamp(36px, 6vw, 72px); font-weight: 700; line-height: 1.4; letter-spacing: 0.02em; }
.concept__text { padding-top: 12px; }
.concept__text p { font-size: 16px; line-height: 2; color: var(--cream-soft); margin-bottom: 20px; }

/* ====== PROMISE ====== */
.promise { padding: 120px 40px;
  background:
    radial-gradient(ellipse at 50% 100%, rgba(201, 169, 110, 0.12) 0%, transparent 60%),
    var(--s-promise);
}
.promise__inner { max-width: 1080px; margin: 0 auto; }
.promise__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 60px; }
.promise__item { text-align: center; }
.promise__icon { width: 64px; height: 64px; margin: 0 auto 28px; color: var(--accent-2); opacity: 0.9; transition: transform 0.4s var(--ease); }
.promise__item:hover .promise__icon { transform: rotate(8deg) scale(1.05); }
.promise__title { font-family: var(--font-mincho); font-size: 28px; font-weight: 700; margin-bottom: 16px; letter-spacing: 0.05em; }
.promise__desc { font-size: 15px; line-height: 1.9; color: var(--cream-soft); text-align: left; }

/* ====== FEATURES ====== */
.features { padding: 160px 40px; background: var(--s-features); }
.features__inner { max-width: 1120px; margin: 0 auto; }
.feature { margin-bottom: 160px; }
.feature:last-child { margin-bottom: 0; }
.feature--alt .feature__head { flex-direction: row-reverse; }
.feature__head { display: flex; align-items: baseline; gap: 24px; margin-bottom: 50px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.feature__num { font-family: var(--font-en); font-size: 80px; font-weight: 300; line-height: 1; color: var(--accent-2); opacity: 0.45; flex-shrink: 0; }
.feature__title { font-family: var(--font-mincho); font-size: clamp(26px, 3.2vw, 40px); font-weight: 700; line-height: 1.3; letter-spacing: 0.02em; }
.feature__body { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.feature__body--reverse { direction: rtl; }
.feature__body--reverse > * { direction: ltr; }
.feature__text p { font-size: 16px; line-height: 2; color: var(--cream-soft); margin-bottom: 24px; }
.feature__list { list-style: none; }
.feature__list li { font-size: 15px; line-height: 2; color: var(--cream-soft); padding-left: 20px; position: relative; }
.feature__list li::before { content: '—'; position: absolute; left: 0; color: var(--cream-faint); }
.feature__chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.chip { font-size: 13px; padding: 5px 12px; border: 1px solid var(--line-strong); border-radius: 20px; color: var(--cream-soft); display: inline-flex; align-items: center; gap: 5px; }
.chip kbd { padding: 0 5px; font-size: 0.75em; background: var(--cream); color: var(--blue); border: none; }

/* ====== Feature Visual (容器) ====== */
.feature__visual { display: flex; align-items: center; justify-content: center; }

/* ============================================
   UI MOCKUP — 软件界面嵌入网站
   保留软件真实深色 #202020 内部，
   外部用米白铅笔线 + 衬线标号标注
   ============================================ */
.ui-mock {
  position: relative;
  width: 100%; max-width: 520px;
}
/* 米白铅笔标注 */
.ui-mock__anno {
  position: absolute; display: flex; align-items: center; gap: 6px;
  font-family: var(--font-en); font-size: 12px;
  color: var(--cream-soft); letter-spacing: 0.05em;
  z-index: 5; pointer-events: none;
}
.ui-mock__anno-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 18px; height: 18px; border: 1px solid var(--cream-soft);
  border-radius: 50%; font-size: 11px; font-weight: 500;
  color: var(--cream); flex-shrink: 0;
}
.ui-mock__anno-line {
  display: block; width: 30px; height: 1px;
  background: var(--cream-soft); opacity: 0.5;
}
.ui-mock__anno-text { white-space: nowrap; }
.ui-mock__anno--1 { top: 12%; right: -140px; }
.ui-mock__anno--2 { top: 42%; left: -140px; flex-direction: row-reverse; }
.ui-mock__anno--3 { bottom: 18%; right: -120px; }

/* 模拟窗口外框 */
.ui-mock__frame {
  background: var(--ui-bg);
  border-radius: 10px; overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(248, 242, 237, 0.08);
}
.ui-mock__bar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: #161616; }
.ui-mock__bar > span { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.ui-mock__bar > span:nth-child(1) { background: #FF5F57; }
.ui-mock__bar > span:nth-child(2) { background: #FEBC2E; }
.ui-mock__bar > span:nth-child(3) { background: #28C840; }
.ui-mock__bar-title {
  width: auto !important; height: auto !important; border-radius: 0 !important;
  background: none !important; flex-shrink: 1;
  font-family: var(--font-sans); font-size: 11px; color: var(--ui-text-dim);
  margin-left: 8px; letter-spacing: 0.02em; line-height: 1.4;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* 截图模式 mockup */
.ui-mock__screen { position: relative; aspect-ratio: 16/10; background: linear-gradient(135deg, #1a2332, #2a3142); overflow: hidden; }
.ui-mock__bg { position: absolute; inset: 0; padding: 24px; display: flex; flex-direction: column; gap: 14px; }
.ui-mock__win { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 6px; height: 50px; width: 70%; }
.ui-mock__win--2 { width: 50%; height: 40px; }
.ui-mock__overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.45); }
.ui-mock__sel {
  position: absolute; left: 22%; top: 18%; width: 56%; height: 64%;
  border: 2px solid var(--ui-accent);
  box-shadow: 0 0 0 9999px rgba(0,0,0,0.45);
}
.ui-mock__sel-h { position: absolute; width: 9px; height: 9px; background: #fff; border: 2px solid var(--ui-accent); border-radius: 1px; }
.ui-mock__sel-h--tl { top: -6px; left: -6px; }
.ui-mock__sel-h--tr { top: -6px; right: -6px; }
.ui-mock__sel-h--bl { bottom: -6px; left: -6px; }
.ui-mock__sel-h--br { bottom: -6px; right: -6px; }
.ui-mock__size {
  position: absolute; top: -28px; left: 0;
  background: #1E1E22; color: #fff;
  padding: 5px 10px; border-radius: 6px;
  font-size: 11px; font-weight: 600;
  white-space: nowrap;
}
.ui-mock__sel-content { position: absolute; inset: 0; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.ui-mock__card { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: 4px; height: 36px; width: 80%; }
.ui-mock__card--2 { width: 55%; height: 28px; background: rgba(66,25,242,0.3); }

/* 选区内真实卡片内容（精致版） */
.ui-mock__sel-card { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 4px; padding: 8px 10px; }
.ui-mock__sel-card-head { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.ui-mock__sel-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ui-accent); flex-shrink: 0; }
.ui-mock__sel-dot--green { background: #07C160; }
.ui-mock__sel-card-title { font-size: 9px; color: rgba(255,255,255,0.7); font-weight: 600; letter-spacing: 0.02em; }
.ui-mock__sel-lines { display: flex; flex-direction: column; gap: 4px; }
.ui-mock__sel-line { height: 4px; background: rgba(255,255,255,0.15); border-radius: 2px; }
.ui-mock__sel-line--w90 { width: 90%; }
.ui-mock__sel-line--w70 { width: 70%; }
.ui-mock__sel-line--w50 { width: 50%; }
.ui-mock__sel-line--accent { background: rgba(66,25,242,0.5); width: 40%; }

/* 工具选项栏（精致版） */
.ui-mock__optionsbar {
  position: absolute; left: 50%; bottom: 52px; transform: translateX(-50%);
  background: rgba(0,0,0,0.5); padding: 1px; border-radius: 9px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
  max-width: calc(100% - 24px);
}
.ui-mock__optionsbar-inner {
  background: var(--ui-panel); border-radius: 8px;
  padding: 5px 8px; display: flex; align-items: center; gap: 4px;
  min-height: 36px;
}
.ui-mock__opt-tool {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 24px; border-radius: 5px; color: var(--ui-text-dim); cursor: pointer;
}
.ui-mock__opt-tool svg { width: 22px; height: 10px; }
.ui-mock__opt-tool--on { background: rgba(66,25,242,0.2); color: #A08BF8; }
.ui-mock__opt-sep { width: 1px; height: 14px; background: var(--ui-separator); margin: 0 2px; }
.ui-mock__thickness {
  display: flex; align-items: center; gap: 6px;
  padding: 0 8px; height: 24px; border-radius: 5px; cursor: pointer;
}
.ui-mock__thickness:hover { background: var(--ui-hover); }
.ui-mock__thickness-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ui-text); }
.ui-mock__thickness-val { font-size: 11px; font-weight: 600; color: var(--ui-text); min-width: 14px; text-align: center; }
.ui-mock__swatches { display: flex; align-items: center; gap: 3px; }

/* 放大镜 */
.ui-mock__mag {
  position: absolute; right: 4%; top: 10%; width: 130px;
  background: var(--ui-bg); border-radius: 7px; padding: 1px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}
.ui-mock__mag-lens {
  width: 100%; aspect-ratio: 1;
  background: repeating-linear-gradient(45deg, #2a3548 0, #2a3548 4px, #2a3a50 4px, #2a3a50 8px);
  border: 1px solid var(--ui-separator); border-radius: 5px;
  position: relative; overflow: hidden;
}
.ui-mock__mag-cross-h { position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: rgba(255,255,255,0.7); }
.ui-mock__mag-cross-v { position: absolute; top: 0; bottom: 0; left: 50%; width: 1px; background: rgba(255,255,255,0.7); }
.ui-mock__mag-info { background: var(--ui-bg); padding: 6px 8px; font-size: 10px; color: #fff; font-family: var(--font-mono); }
.ui-mock__mag-coord { display: block; }
.ui-mock__mag-color { display: flex; align-items: center; gap: 6px; margin-top: 4px; }
.ui-mock__mag-swatch { width: 11px; height: 11px; border-radius: 2px; border: 1px solid var(--ui-border); background: #3A8AFF; }
.ui-mock__mag-hex { font-size: 10px; }
.ui-mock__mag-hint { display: block; font-size: 9px; color: rgba(255,255,255,0.5); margin-top: 3px; font-family: var(--font-sans); }

/* 主工具栏 */
.ui-mock__toolbar {
  position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 1px;
  background: rgba(0,0,0,0.5); padding: 1px; border-radius: 9px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
  max-width: calc(100% - 24px);
}
.ui-mock__toolbar::after {
  content: ''; position: absolute; inset: 1px;
  background: var(--ui-panel); border-radius: 8px; z-index: 0;
}
.ui-mock__t {
  position: relative; z-index: 1;
  width: 28px; height: 28px; display: flex; align-items: center; justify-content: center;
  color: var(--ui-text-dim); cursor: pointer; transition: all 0.2s; flex-shrink: 0;
}
.ui-mock__t svg { width: 13px; height: 13px; }
.ui-mock__t:hover { background: var(--ui-hover); border-radius: 5px; }
.ui-mock__t--on { background: rgba(66,25,242,0.2); color: #A08BF8; border-radius: 5px; }
.ui-mock__t--sep { width: 1px; height: 16px; background: var(--ui-separator); margin: 0 2px; }
.ui-mock__t--sep:hover { background: var(--ui-separator); }
.ui-mock__t--danger { color: #FF5555; }
.ui-mock__t--success { color: #07C160; }

.ui-mock__caption {
  text-align: center; margin-top: 16px;
  font-family: var(--font-en); font-size: 13px; font-style: italic;
  color: var(--cream-dim); letter-spacing: 0.05em;
}

/* 标注画布 mockup */
.ui-mock__frame--canvas { background: var(--ui-bg); }
.ui-mock__canvas { position: relative; aspect-ratio: 16/10; background: #f8f4f0; overflow: hidden; }
.ui-mock__canvas-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(135deg, #e8e4dd 0%, #f0ece5 100%);
  background-image:
    linear-gradient(rgba(0,0,0,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.04) 1px, transparent 1px),
    linear-gradient(135deg, #e8e4dd 0%, #f0ece5 100%);
  background-size: 20px 20px, 20px 20px, 100% 100%;
}
.ui-mock__ann { position: absolute; }
.ui-mock__ann--rect { top: 18%; left: 12%; width: 32%; height: 28%; border: 2.5px solid #D46060; border-radius: 2px; }
.ui-mock__ann--arrow { top: 18%; right: 18%; width: 28%; height: 22%; }
.ui-mock__ann--text {
  top: 14%; right: 8%;
  background: #fff; border: 1.5px solid #C9A96E;
  padding: 4px 10px; border-radius: 3px;
  font-size: 12px; color: #5a4a30; font-weight: 500;
}
.ui-mock__ann--mosaic {
  bottom: 14%; left: 14%; width: 28%; height: 22%;
  background:
    repeating-conic-gradient(#c0bcb4 0% 25%, #d0ccc4 0% 50%) 0 0/8px 8px;
  border-radius: 2px;
}
.ui-mock__ann--count {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: #D46060; color: #fff;
  font-size: 13px; font-weight: 700;
  font-family: var(--font-en);
}
.ui-mock__ann--count-1 { top: 50%; right: 24%; }
.ui-mock__ann--count-2 { top: 65%; right: 12%; }
.ui-mock__ann--brush { bottom: 16%; right: 8%; width: 30%; height: 20%; }

/* 工具选项栏 */
.ui-mock__options {
  display: flex; align-items: center; gap: 4px;
  background: #161616; padding: 8px 12px;
  border-top: 1px solid var(--ui-border);
}
.ui-mock__opt {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 8px; font-size: 11px; color: var(--ui-text-dim);
  font-family: var(--font-sans);
}
.ui-mock__opt svg { width: 18px; height: 6px; }
.ui-mock__opt--sep { width: 1px; height: 14px; background: var(--ui-separator); padding: 0; margin: 0 2px; }
.ui-mock__opt--dot { }
.ui-mock__opt-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ui-text); display: inline-block; }
.ui-mock__swatch {
  width: 18px; height: 18px; border-radius: 4px; cursor: pointer;
  border: none; padding: 0;
}
.ui-mock__swatch--custom {
  background: conic-gradient(from 45deg, #FF4D4F, #FFC53D, #52C41A, #13C2C2, #2F54EB, #EB2F96, #FF4D4F);
  position: relative;
}
.ui-mock__swatch--custom::after {
  content: ''; position: absolute; inset: 4px; background: #3388FF; border-radius: 2px; border: 1px solid #fff;
}
.ui-mock__swatch--on { box-shadow: 0 0 0 2px var(--ui-panel), 0 0 0 3px var(--ui-accent); }

/* 桌面贴图 mockup */
.ui-mock__frame--desktop { background: var(--ui-bg); }
.ui-mock__desktop {
  position: relative; aspect-ratio: 16/10;
  background:
    radial-gradient(ellipse at 30% 30%, #2a3142 0%, transparent 50%),
    linear-gradient(135deg, #1a1f2e 0%, #0f1419 100%);
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px),
    radial-gradient(ellipse at 30% 30%, #2a3142 0%, transparent 50%),
    linear-gradient(135deg, #1a1f2e 0%, #0f1419 100%);
  background-size: 30px 30px, 30px 30px, 100% 100%, 100% 100%;
  overflow: hidden;
}
.ui-mock__sticker {
  position: absolute; background: var(--ui-card); border-radius: 5px; overflow: hidden;
}
.ui-mock__sticker--focus {
  left: 8%; top: 16%; width: 50%;
  box-shadow: 0 0 0 2px rgba(66,25,242,0.7), 0 12px 30px rgba(66,25,242,0.3), 0 8px 20px rgba(0,0,0,0.5);
}
.ui-mock__sticker--unfocused {
  right: 6%; top: 12%; width: 30%;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.2), 0 8px 20px rgba(0,0,0,0.4);
}
.ui-mock__sticker--locked {
  right: 32%; bottom: 12%; width: 90px; height: 90px;
  box-shadow: 0 0 0 2px #FF9500, 0 8px 20px rgba(0,0,0,0.5);
}
.ui-mock__sticker-badge {
  position: absolute; top: -8px; right: -8px; z-index: 2;
  background: var(--ui-card); border: 1px solid var(--ui-border);
  padding: 2px 7px; border-radius: 10px;
  font-size: 9px; color: var(--ui-text-dim); font-weight: 600;
}
.ui-mock__sticker--focus .ui-mock__sticker-badge { background: var(--ui-accent); color: #fff; border-color: var(--ui-accent); }
.ui-mock__sticker--locked .ui-mock__sticker-badge { background: #FF9500; color: #fff; border-color: #FF9500; }

/* 代码贴图 */
.ui-mock__code-head {
  background: #2B2B2B; padding: 8px 12px;
  display: flex; align-items: center; gap: 6px;
  border-bottom: 1px solid var(--ui-border);
}
.ui-mock__code-dot { width: 8px; height: 8px; border-radius: 50%; }
.ui-mock__code-title { font-size: 10px; color: var(--ui-text-dim); margin-left: 6px; font-family: var(--font-mono); }
.ui-mock__code {
  background: #1E1E1E; padding: 10px 12px;
  font-family: var(--font-mono); font-size: 10px; line-height: 1.7;
  color: var(--ui-text-dim); margin: 0; white-space: pre-wrap;
}
.ui-mock__c-com { color: #6A9955; }
.ui-mock__c-key { color: #569CD6; }
.ui-mock__c-fn { color: #DCDCAA; }

/* 颜色贴图 */
.ui-mock__sticker--color { padding: 0; }
.ui-mock__color-strip { height: 36px; background: #FF5733; }
.ui-mock__color-info { padding: 10px 12px; display: flex; flex-direction: column; gap: 5px; }
.ui-mock__color-row { display: flex; justify-content: space-between; font-size: 10px; font-family: var(--font-mono); }
.ui-mock__color-row span { color: var(--ui-text-dim); }
.ui-mock__color-row strong { color: var(--ui-text); }

/* 锁定缩略图 */
.ui-mock__thumb-bg { width: 100%; height: 100%; background: linear-gradient(135deg, #4219F2, #6242F5); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; font-weight: 700; font-family: var(--font-en); }

/* OCR 翻译 mockup */
.ui-mock__frame--ocr { background: var(--ui-bg); }
.ui-mock__ocr { display: flex; gap: 14px; padding: 16px; align-items: stretch; }
.ui-mock__ocr-side { flex: 1; }
.ui-mock__ocr-label {
  font-family: var(--font-en); font-size: 11px; letter-spacing: 0.1em;
  color: var(--ui-text-dim); margin-bottom: 10px; padding-bottom: 6px;
  border-bottom: 1px solid var(--ui-border);
}
.ui-mock__ocr-label--accent { color: #A08BF8; }
.ui-mock__ocr-img { display: flex; flex-direction: column; gap: 8px; }
.ui-mock__ocr-line { font-size: 12px; line-height: 1.6; color: var(--ui-text); }
.ui-mock__ocr-line--dim { color: var(--ui-text-dim); opacity: 0.7; }
.ui-mock__ocr-line--tr { font-family: var(--font-en); font-size: 12px; color: #A08BF8; }
.ui-mock__ocr-arrow { display: flex; align-items: center; color: var(--ui-text-dim); opacity: 0.5; }
.ui-mock__ocr-foot {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px; background: #161616;
  border-top: 1px solid var(--ui-border);
}
.ui-mock__ocr-pill {
  padding: 3px 10px; border-radius: 12px;
  font-size: 11px; color: var(--ui-text-dim);
  border: 1px solid var(--ui-border); cursor: pointer;
}
.ui-mock__ocr-pill--on { background: var(--ui-accent); color: #fff; border-color: var(--ui-accent); }
.ui-mock__ocr-meta { margin-left: auto; font-size: 10px; color: var(--ui-text-dim); font-family: var(--font-mono); }

/* ====== DOWNLOAD (增强) ====== */
.download {
  padding: 160px 40px;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(201, 169, 110, 0.12) 0%, transparent 55%),
    var(--s-download);
}
.download__inner { max-width: 800px; margin: 0 auto; text-align: center; }
.download__title { font-family: var(--font-mincho); font-size: clamp(32px, 5vw, 56px); font-weight: 700; margin-bottom: 16px; letter-spacing: 0.02em; }
.download__desc { font-size: 16px; color: var(--cream-soft); margin-bottom: 36px; }

/* 系统要求徽章 */
.download__badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 40px; }
.download__badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 16px;
  background: rgba(245, 237, 233, 0.06); border: 1px solid var(--line);
  font-size: 13px; color: var(--cream-soft);
}
.download__badge svg { color: var(--cream-dim); }

.download__card { display: flex; align-items: center; justify-content: space-between; background: rgba(245, 237, 233, 0.06); border: 1px solid var(--line); border-radius: 12px; padding: 28px 32px; margin-bottom: 20px; text-align: left; }
.download__card-left { display: flex; align-items: center; gap: 20px; }
.download__card-left svg { color: var(--cream); flex-shrink: 0; }
.download__name { font-family: var(--font-en); font-size: 20px; font-weight: 600; margin-bottom: 6px; }
.download__meta { font-size: 13px; color: var(--cream-dim); display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.download__ver { font-family: var(--font-en); font-weight: 600; color: var(--cream); }
.download__sep { color: var(--cream-faint); }
.download__card-right { display: flex; gap: 12px; flex-shrink: 0; }

/* SHA256 校验 */
.download__checksum {
  background: rgba(245, 237, 233, 0.04); border: 1px solid var(--line);
  border-radius: 10px; padding: 16px 20px; margin-bottom: 28px; text-align: left;
}
.download__checksum-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 8px; }
.download__checksum-label { font-family: var(--font-en); font-size: 13px; font-weight: 600; letter-spacing: 0.1em; color: var(--cream); }
.download__checksum-hint { font-size: 12px; color: var(--cream-dim); }
.download__checksum-val { display: block; font-family: var(--font-mono); font-size: 12px; color: var(--cream-soft); word-break: break-all; line-height: 1.6; }

/* 更新日志 */
.download__changelog {
  background: rgba(245, 237, 233, 0.04); border: 1px solid var(--line);
  border-radius: 10px; padding: 20px 24px; margin-bottom: 28px; text-align: left;
}
.download__changelog-title { font-family: var(--font-en); font-size: 14px; font-weight: 600; letter-spacing: 0.1em; color: var(--cream); margin-bottom: 14px; }
.download__changelog-list { list-style: none; }
.download__changelog-list li {
  display: grid; grid-template-columns: auto auto 1fr; gap: 14px; align-items: baseline;
  font-size: 13px; color: var(--cream-soft); padding: 6px 0;
}
.download__changelog-ver { font-family: var(--font-en); font-weight: 600; color: var(--cream); }
.download__changelog-date { font-family: var(--font-en); color: var(--cream-dim); font-size: 12px; }
.download__changelog-more { display: inline-block; margin-top: 12px; font-size: 13px; color: var(--cream-soft); transition: color 0.3s; }
.download__changelog-more:hover { color: var(--cream); }

.download__notes { display: flex; flex-direction: column; gap: 12px; margin-top: 30px; }
.download__note { display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 14px; color: var(--cream-dim); }
.download__note-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--cream); opacity: 0.4; flex-shrink: 0; }

/* ====== Toast 提示 ====== */
.toast {
  position: fixed; top: 88px; left: 50%;
  transform: translateX(-50%) translateY(-16px);
  z-index: 10000;
  background: rgba(26, 10, 90, 0.92);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--line-strong);
  color: var(--cream);
  padding: 14px 30px; border-radius: 8px;
  font-family: var(--font-mincho); font-size: 15px; letter-spacing: 0.06em;
  box-shadow: 0 14px 44px rgba(0, 0, 0, 0.45);
  opacity: 0; pointer-events: none;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
  white-space: nowrap;
}
.toast.--show {
  opacity: 1; transform: translateX(-50%) translateY(0);
}

/* ====== FOOTER ====== */
.footer { background: var(--s-footer); color: var(--cream); padding: 80px 40px 40px; }
.footer__inner { max-width: 800px; margin: 0 auto; text-align: center; }
.footer__logo { display: flex; align-items: center; justify-content: center; gap: 8px; font-family: var(--font-en); font-size: 24px; font-weight: 600; margin-bottom: 12px; }
.footer__tagline { font-family: var(--font-mincho); font-size: 18px; color: var(--cream-soft); margin-bottom: 32px; letter-spacing: 0.1em; }
.footer__links { display: flex; justify-content: center; gap: 32px; margin-bottom: 40px; }
.footer__links a { font-size: 15px; color: var(--cream-soft); transition: color 0.3s; }
.footer__links a:hover { color: var(--cream); }
.footer__meta { margin-bottom: 40px; }
.footer__meta p { font-size: 13px; color: var(--cream-dim); line-height: 2; }
.footer__copyright { font-size: 13px; color: var(--cream-faint); padding-top: 24px; border-top: 1px solid var(--line); }

/* ====== Responsive ====== */
@media (max-width: 1100px) {
  .hero__preview-tag { display: none; }
  .ui-mock__anno { display: none; }
  .showcase__mock-tag { display: none; }
}
@media (max-width: 900px) {
  body { font-size: 16px; }
  .nav { padding: 14px 20px; } .nav.--scrolled { padding: 10px 20px; }
  .nav__links { display: none; position: fixed; top: 56px; left: 0; right: 0; background: var(--s-showcase); flex-direction: column; padding: 20px; gap: 20px; box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
  .nav__links.--open { display: flex; }
  .nav__toggle { display: flex; }
  .nav__badge-text { display: none; }
  .nav__badge { padding: 6px 10px; }
  .hero { padding: 64px 20px 24px; }
  .hero__topline { left: 20px; right: 20px; }
  .hero__corner--tl { left: 20px; }
  .hero__corner--tr { right: 20px; }
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__title { font-size: clamp(64px, 18vw, 120px); }
  .hero__title-en { font-size: 14px; margin-bottom: 32px; }
  .hero__subtitle { font-size: 22px; }
  .hero__brand { max-width: none; }
  .hero__tagline { max-width: 300px; white-space: normal; }
  .hero__cta { justify-content: center; }
  .hero__swatch-float { display: none; }
  .hero__canvas { max-width: 320px; margin: 0 auto; }
  .hero__footer { grid-template-columns: 1fr; gap: 16px; text-align: center; }
  .hero__footer-left, .hero__footer-right { justify-content: center; }
  .showcase { padding: 80px 20px 60px; }
  .showcase__head { margin-bottom: 40px; }
  .concept { padding: 80px 20px; } .concept__body { grid-template-columns: 1fr; gap: 40px; }
  .promise { padding: 80px 20px; } .promise__grid { grid-template-columns: 1fr; gap: 40px; }
  .features { padding: 80px 20px; } .feature { margin-bottom: 80px; }
  .feature__head { flex-direction: column !important; gap: 12px; }
  .feature__num { font-size: 40px; }
  .feature__body { grid-template-columns: 1fr !important; gap: 30px; direction: ltr !important; }
  .design { display: none; }
  .download { padding: 80px 20px; }
  .download__card { flex-direction: column; gap: 24px; text-align: center; }
  .download__card-left { flex-direction: column; }
  .download__card-right { width: 100%; } .btn { flex: 1; }
  .footer { padding: 60px 20px 30px; } .footer__links { gap: 20px; flex-wrap: wrap; }
}
@media (max-width: 640px) {
  .design__values { display: none; }
  .download__card-right { flex-direction: column; }
  .download__changelog-list li { grid-template-columns: 1fr; gap: 4px; }
}