/* =========================================================
   青玉智枢 QINGYU ZHISHU — 品牌官网（新中式 · 编辑感）
   全站思源宋体 · 滚动动效 · 纸墨质感
   ========================================================= */

:root {
  --crimson: #a5121e;
  --crimson-deep: #7d0b15;
  --crimson-soft: #c8353f;
  --crimson-wash: #f7eceb;
  --gold: #b98a3c;
  --gold-soft: #d3a05f;

  --ink: #17130f;
  --ink-70: #4b423b;
  --ink-50: #7a716a;
  --ink-30: #a9a099;

  --paper: #fbf8f2;
  --paper-2: #f5f0e7;
  --white: #fffdfa;

  --line: rgba(23, 19, 15, .10);
  --line-strong: rgba(23, 19, 15, .18);

  --serif: "Noto Serif SC", "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --calli: "AiminXingKai", "Kaiti SC", "STKaiti", "KaiTi", serif;

  --shadow-sm: 0 1px 2px rgba(23, 19, 15, .05), 0 6px 16px -8px rgba(23, 19, 15, .12);
  --shadow-md: 0 2px 6px rgba(23, 19, 15, .05), 0 24px 60px -24px rgba(23, 19, 15, .25);
  --shadow-lg: 0 40px 100px -40px rgba(23, 19, 15, .35);

  --max: 1160px;
  --nav-h: 76px;
  --ease: cubic-bezier(.22, .8, .26, .99);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img, svg { display: block; }
button { font-family: inherit; cursor: pointer; }
::selection { background: var(--crimson); color: #fff; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }

/* ---------- 滚动进度 ---------- */
#progress {
  position: fixed; top: 0; left: 0; z-index: 300;
  height: 2px; width: 0;
  background: linear-gradient(90deg, var(--crimson), var(--gold-soft));
  transition: width .12s linear;
}

/* ---------- 通知 ---------- */
.notice {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 9px 48px 9px 20px;
  background: var(--crimson);
  color: rgba(255, 252, 248, .92);
  font-size: 13.5px; letter-spacing: .06em;
  position: relative;
}
.notice .seal-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--gold-soft);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(211, 160, 95, .5); } 50% { box-shadow: 0 0 0 5px rgba(211, 160, 95, 0); } }
.notice p { margin: 0; }
.notice a {
  color: #fff; font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, .4);
  padding-bottom: 1px; transition: border-color .25s;
}
.notice a:hover { border-color: #fff; }
.notice a i { font-style: normal; margin-left: 4px; display: inline-block; transition: transform .25s var(--ease); }
.notice a:hover i { transform: translateX(3px); }
.notice .close {
  position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: rgba(255, 255, 255, .65);
  padding: 6px; line-height: 0; transition: color .2s;
}
.notice .close:hover { color: #fff; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 200;
  background: rgba(251, 248, 242, .82);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background .4s, border-color .4s, box-shadow .4s;
}
.nav.is-stuck {
  background: rgba(251, 248, 242, .94);
  border-color: var(--line);
  box-shadow: 0 10px 30px -18px rgba(23, 19, 15, .25);
}
.nav .wrap { display: flex; align-items: center; gap: 40px; height: var(--nav-h); }

.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand img { width: 42px; height: 42px; border-radius: 8px; transition: transform .5s var(--ease); }
.brand:hover img { transform: rotate(-6deg) scale(1.06); }
.brand-txt strong {
  display: block;
  font-size: 24px; font-weight: 900; letter-spacing: .16em; line-height: 1.15;
}
.brand-txt em {
  display: block; margin-top: 3px;
  font-style: normal;
  font-size: 9px; letter-spacing: .3em; white-space: nowrap; line-height: 1;
  color: #ffffff;
  text-shadow: 0 1px 1px rgba(23, 19, 15, .22), 0 0 8px rgba(23, 19, 15, .12);
}

.nav-links { display: flex; gap: 6px; margin: 0 auto; }
.nav-links a {
  position: relative; padding: 8px 14px;
  font-size: 14.5px; letter-spacing: .08em; color: var(--ink-70);
  transition: color .25s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 3px;
  height: 1.5px; background: var(--crimson);
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-actions { display: flex; align-items: center; gap: 18px; flex: none; margin-left: auto; }
.btn-text { font-size: 14.5px; letter-spacing: .08em; color: var(--ink-70); transition: color .2s; }
.btn-text:hover { color: var(--crimson); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: inherit; font-size: 15px; letter-spacing: .1em;
  border-radius: 999px; padding: 11px 26px;
  border: 1px solid transparent;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .25s, color .25s, border-color .25s;
  will-change: transform;
}
.btn-lg { padding: 14px 34px; font-size: 16px; }
.btn-primary {
  background: var(--crimson); color: #fff;
  box-shadow: 0 8px 22px -10px rgba(165, 18, 30, .55);
}
.btn-primary:hover {
  background: var(--crimson-deep);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -10px rgba(165, 18, 30, .6);
}
.btn-primary:active { transform: translateY(0); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); background: var(--white); }
.btn-light { background: #fff; color: var(--crimson-deep); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 14px 34px -12px rgba(0, 0, 0, .4); }
.btn-outline-light { border-color: rgba(255, 255, 255, .45); color: #fff; }
.btn-outline-light:hover { border-color: #fff; background: rgba(255, 255, 255, .08); transform: translateY(-2px); }

/* ---------- 移动端 ---------- */
.nav-toggle { display: none; background: none; border: none; padding: 8px; }
.nav-toggle span { display: block; width: 20px; height: 1.6px; background: var(--ink); margin: 4.5px 0; transition: .3s var(--ease); }
body.menu-open .nav-toggle span:nth-child(1) { transform: translateY(6.1px) rotate(45deg); }
body.menu-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.menu-open .nav-toggle span:nth-child(3) { transform: translateY(-6.1px) rotate(-45deg); }

.drawer {
  display: none; position: fixed; left: 0; right: 0; z-index: 190;
  background: var(--white); border-bottom: 1px solid var(--line);
  padding: 12px 28px 24px;
  box-shadow: 0 30px 50px -30px rgba(23, 19, 15, .3);
  opacity: 0; transform: translateY(-12px); pointer-events: none;
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
body.menu-open .drawer { opacity: 1; transform: none; pointer-events: auto; }
.drawer a { display: block; padding: 13px 4px; border-bottom: 1px solid var(--line); font-size: 16px; letter-spacing: .1em; }
.drawer .btn { margin-top: 16px; width: 100%; }

/* =========================================================
   Hero
   ========================================================= */
.hero { position: relative; padding: 88px 0 40px; overflow: hidden; }
.hero-aura {
  position: absolute; inset: -20% -10% auto; height: 120%; pointer-events: none;
  background:
    radial-gradient(560px 400px at 78% 26%, rgba(165, 18, 30, .085), transparent 65%),
    radial-gradient(520px 380px at 12% 60%, rgba(185, 138, 60, .09), transparent 65%);
  animation: aura 11s ease-in-out infinite alternate;
}
@keyframes aura {
  0% { transform: translate3d(0, 0, 0) scale(1); opacity: .85; }
  100% { transform: translate3d(0, -28px, 0) scale(1.07); opacity: 1; }
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image:
    linear-gradient(rgba(23, 19, 15, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 19, 15, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(720px 460px at 50% 0, #000 30%, transparent 78%);
  mask-image: radial-gradient(720px 460px at 50% 0, #000 30%, transparent 78%);
}

.hero-inner { position: relative; text-align: center; max-width: 780px; margin: 0 auto; }

.hero h1 {
  margin: 0;
  font-size: clamp(42px, 6.4vw, 76px);
  font-weight: 900; line-height: 1.22; letter-spacing: .045em;
}
.hero h1 .accent {
  color: var(--crimson);
  position: relative; white-space: nowrap;
  background: linear-gradient(transparent 68%, rgba(211, 160, 95, .38) 68%);
}

.typing-line {
  margin: 26px 0 0;
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--ink-50); letter-spacing: .12em;
  min-height: 1.8em;
}
.typed { color: var(--crimson); font-weight: 600; margin-left: 2px; }
.caret {
  display: inline-block; width: 2px; height: 1.05em;
  background: var(--crimson); margin-left: 3px; vertical-align: -0.15em;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.lede {
  margin: 22px auto 0; max-width: 560px;
  font-size: 17px; line-height: 1.9; color: var(--ink-70);
}
.lede strong { color: var(--ink); }

.hero-cta { margin-top: 38px; display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ---------- 工作台示意 ---------- */
.stage { position: relative; max-width: 880px; margin: 68px auto 0; }
.stage-glow {
  position: absolute; inset: 8% -6% -8%;
  background: radial-gradient(closest-side, rgba(165, 18, 30, .12), transparent 72%);
  filter: blur(28px);
  animation: aura 9s ease-in-out infinite alternate;
}

.app {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.app-bar {
  display: flex; align-items: center; gap: 14px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
}
.dots { display: flex; gap: 6px; }
.dots i { width: 9px; height: 9px; border-radius: 50%; background: rgba(23, 19, 15, .14); }
.dots i:first-child { background: rgba(165, 18, 30, .45); }
.app-url {
  flex: 1; text-align: center;
  font-size: 12px; letter-spacing: .22em; color: var(--ink-30);
}

.app-body { display: flex; min-height: 348px; }

.mock-side {
  width: 178px; flex: none;
  border-right: 1px solid var(--line);
  padding: 16px 12px;
  background: var(--paper);
}
.mock-user { display: flex; align-items: center; gap: 9px; padding: 0 6px 14px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.mock-user strong { display: block; font-size: 13px; }
.mock-user small { font-size: 11px; color: var(--ink-30); letter-spacing: .1em; }

.avatar {
  width: 30px; height: 30px; flex: none; border-radius: 8px;
  background: var(--crimson-wash); color: var(--crimson);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
}
.mock-main .avatar { width: 26px; height: 26px; font-size: 12px; border-radius: 7px; }

.mock-label { font-size: 10.5px; letter-spacing: .3em; color: var(--ink-30); padding: 0 6px; margin-bottom: 8px; }
.mock-thread {
  font-size: 12.5px; color: var(--ink-70);
  padding: 7px 9px; border-radius: 8px; margin-bottom: 2px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.mock-thread.active { background: var(--crimson-wash); color: var(--crimson-deep); font-weight: 600; }

.mock-main { flex: 1; padding: 20px; display: flex; flex-direction: column; gap: 14px; background: var(--white); }

.task-card {
  flex: 1;
  border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; background: var(--white);
  box-shadow: var(--shadow-sm);
}
.task-q { display: flex; gap: 10px; align-items: flex-start; }
.task-q p { margin: 0; font-size: 13.5px; line-height: 1.7; color: var(--ink); }

.task-steps { margin: 16px 0 0; display: flex; flex-direction: column; gap: 8px; }
.step {
  display: flex; align-items: center; gap: 9px;
  font-size: 12.5px; color: var(--ink-30);
  opacity: 0; transform: translateY(8px);
  transition: opacity .45s var(--ease), transform .45s var(--ease), color .45s;
}
.step.show { opacity: 1; transform: none; color: var(--ink-70); }
.step.done { color: var(--ink); }
.tick {
  width: 17px; height: 17px; flex: none; border-radius: 50%;
  border: 1.2px solid var(--line-strong);
  display: inline-flex; align-items: center; justify-content: center;
  color: transparent;
  transition: background .4s, border-color .4s, color .4s;
}
.step.done .tick { background: var(--crimson); border-color: var(--crimson); color: #fff; }
.spinner {
  width: 15px; height: 15px; flex: none; border-radius: 50%;
  border: 1.6px solid rgba(165, 18, 30, .2); border-top-color: var(--crimson);
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.task-file {
  margin-top: 16px;
  display: flex; align-items: center; gap: 11px;
  border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; background: var(--paper);
}
.file-ico {
  width: 30px; height: 36px; flex: none; border-radius: 4px;
  background: var(--crimson); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; letter-spacing: 0;
  box-shadow: inset 0 -8px 0 rgba(125, 11, 21, .55);
}
.task-file strong { display: block; font-size: 12.5px; }
.task-file small { font-size: 11px; color: var(--ink-30); letter-spacing: .06em; }
.task-file .dl { margin-left: auto; color: var(--ink-30); }

.mock-input {
  border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 14px; background: var(--paper);
}
.mock-input p { margin: 0 0 10px; font-size: 12px; color: var(--ink-30); letter-spacing: .08em; }
.mock-input .bar { display: flex; align-items: center; gap: 7px; }
.chip {
  font-size: 11px; letter-spacing: .08em;
  padding: 4px 11px; border-radius: 999px;
  border: 1px solid var(--line-strong); color: var(--ink-50);
}
.chip.on { background: var(--crimson); border-color: var(--crimson); color: #fff; }
.mock-input .send {
  margin-left: auto; width: 26px; height: 26px; border-radius: 8px;
  background: var(--crimson); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
}

/* =========================================================
   区块通用
   ========================================================= */
.section { padding: 108px 0; }
.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head h2 {
  margin: 14px 0 0;
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 900; line-height: 1.35; letter-spacing: .04em;
}
.section-head .lede { margin-left: 0; text-align: left; max-width: 560px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12.5px; letter-spacing: .42em; color: var(--crimson);
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--crimson); }

/* ---------- 能力 bento ---------- */
.bento { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.card {
  position: relative; overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 26px;
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .3s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(165, 18, 30, .22); }
.c-4 { grid-column: span 4; }
.c-2 { grid-column: span 2; }

.card .ico {
  width: 42px; height: 42px; border-radius: 11px;
  background: var(--crimson-wash); color: var(--crimson);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  transition: transform .5s var(--ease), background .4s;
}
.card .ico.jade { background: rgba(43, 107, 92, .1); color: #2b6b5c; }
.card:hover .ico { transform: rotate(-8deg) scale(1.08); }

.card h3 { margin: 0 0 8px; font-size: 18.5px; font-weight: 700; letter-spacing: .06em; }
.card p { margin: 0; font-size: 14px; line-height: 1.85; color: var(--ink-50); }

.flow { display: flex; align-items: center; gap: 6px; margin-top: 22px; flex-wrap: wrap; }
.flow-node {
  font-size: 11.5px; letter-spacing: .14em;
  padding: 5px 13px; border-radius: 999px;
  border: 1px solid var(--line-strong); color: var(--ink-70);
}
.flow-node.hot { background: var(--crimson); border-color: var(--crimson); color: #fff; }
.flow-line { width: 18px; height: 1px; background: var(--line-strong); }

/* 卡片流光 */
.sheen::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(165, 18, 30, .06), transparent 55%);
  opacity: 0; transition: opacity .4s;
}
.sheen:hover::before { opacity: 1; }

/* ---------- 工作方式 tabs ---------- */
.showcase { background: var(--paper-2); border-block: 1px solid var(--line); }

.tabs {
  display: flex; gap: 4px; margin-bottom: 40px;
  border-bottom: 1px solid var(--line-strong);
  overflow-x: auto; scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  position: relative; background: none; border: none;
  padding: 12px 20px 14px;
  font-size: 15px; letter-spacing: .12em; color: var(--ink-50);
  transition: color .25s; white-space: nowrap;
}
.tab::after {
  content: ""; position: absolute; left: 20px; right: 20px; bottom: -1px;
  height: 2px; background: var(--crimson);
  transform: scaleX(0); transition: transform .35s var(--ease);
}
.tab[aria-selected="true"] { color: var(--ink); font-weight: 700; }
.tab[aria-selected="true"]::after { transform: scaleX(1); }
.tab:hover { color: var(--ink); }

.tab-panel { display: none; }
.tab-panel.on { display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: center; animation: panelIn .55s var(--ease); }
@keyframes panelIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}
.tab-copy h3 { margin: 0 0 12px; font-size: 24px; font-weight: 900; letter-spacing: .05em; }
.tab-copy p { margin: 0; font-size: 15px; line-height: 1.9; color: var(--ink-70); }

.panel-mock {
  background: var(--white);
  border: 1px solid var(--line); border-radius: 16px;
  box-shadow: var(--shadow-md); overflow: hidden;
}
.panel-body { padding: 22px; display: flex; flex-direction: column; gap: 14px; }

.bubble {
  font-size: 13.5px; line-height: 1.8; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line);
  border-radius: 4px 14px 14px 14px; padding: 12px 16px;
}
.bubble.me {
  align-self: flex-end;
  background: var(--crimson); color: #fff; border: none;
  border-radius: 14px 4px 14px 14px;
}
.bubble-row { display: flex; gap: 10px; align-items: flex-start; }
.bubble-file {
  display: flex; align-items: center; gap: 10px;
  font-size: 12.5px; color: var(--ink-70);
  border: 1px solid var(--line); border-radius: 10px;
  padding: 9px 14px; background: var(--paper);
}
.bubble-file .file-ico { width: 22px; height: 27px; font-size: 10px; box-shadow: inset 0 -6px 0 rgba(125, 11, 21, .55); }
.bubble-file .open { margin-left: auto; color: var(--crimson); font-weight: 600; }

/* 文档示意 */
.doc-mock { border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; background: var(--paper); }
.doc-mock .dh { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 14px; }
.doc-mock .dh b { font-size: 15px; letter-spacing: .08em; }
.doc-mock .dh span { font-size: 9.5px; letter-spacing: .3em; color: var(--ink-30); }
.doc-line { height: 7px; border-radius: 4px; background: rgba(23, 19, 15, .1); margin-bottom: 8px; }
.doc-line.w1 { width: 92%; }
.doc-line.w2 { width: 76%; }
.doc-line.w3 { width: 58%; }
.doc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 14px 0; }
.doc-box { border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px; background: var(--white); }
.doc-box em { display: block; font-style: normal; font-size: 10px; color: var(--ink-30); letter-spacing: .1em; }
.doc-box b { font-size: 13.5px; }

/* 数据示意 */
.data-mock { display: flex; flex-direction: column; gap: 14px; }
.chart-card { border: 1px solid var(--line); border-radius: 10px; padding: 16px; background: var(--paper); }
.chart-title { font-size: 12px; letter-spacing: .18em; color: var(--ink-50); margin-bottom: 14px; }
.bars { display: flex; align-items: flex-end; gap: 10px; height: 120px; }
.bars i {
  flex: 1; position: relative;
  background: linear-gradient(180deg, rgba(165, 18, 30, .8), rgba(165, 18, 30, .45));
  border-radius: 3px 3px 0 0;
  transform-origin: bottom; transform: scaleY(0);
}
.tab-panel.on .bars i { animation: barUp .8s var(--ease) forwards; }
.tab-panel.on .bars i:nth-child(2) { animation-delay: .07s; }
.tab-panel.on .bars i:nth-child(3) { animation-delay: .14s; }
.tab-panel.on .bars i:nth-child(4) { animation-delay: .21s; }
.tab-panel.on .bars i:nth-child(5) { animation-delay: .28s; }
.tab-panel.on .bars i:nth-child(6) { animation-delay: .35s; }
@keyframes barUp { to { transform: scaleY(1); } }
.bars i span {
  position: absolute; top: -18px; left: 50%; transform: translateX(-50%);
  font-size: 10px; color: var(--ink-50); font-style: normal;
}

/* 流程示意 */
.flow-mock { display: flex; flex-direction: column; gap: 8px; }
.wf-row {
  display: flex; align-items: center; gap: 12px;
  font-size: 13px; color: var(--ink-70);
  border: 1px solid var(--line); border-radius: 10px;
  padding: 11px 14px; background: var(--paper);
}
.wf-ico {
  width: 26px; height: 26px; flex: none; border-radius: 7px;
  background: var(--crimson-wash); color: var(--crimson);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
}
.wf-row small { margin-left: auto; font-size: 11px; letter-spacing: .1em; color: var(--ink-30); }
.wf-row small.ok { color: #2b6b5c; font-weight: 600; }

/* ---------- 额度 ---------- */
.pricing .section-head { text-align: center; margin-inline: auto; }
.pricing .eyebrow { justify-content: center; }
.pricing .eyebrow::after { content: ""; width: 22px; height: 1px; background: var(--crimson); }
.pricing .section-head .lede { margin-inline: auto; text-align: center; }

.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; max-width: 960px; margin: 0 auto; }
.plan {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line); border-radius: 18px;
  padding: 34px 30px;
  display: flex; flex-direction: column;
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .3s;
}
.plan:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.plan.featured {
  border-color: var(--crimson);
  box-shadow: 0 24px 60px -28px rgba(165, 18, 30, .4);
}
.plan.featured::before {
  content: "常用";
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  background: var(--crimson); color: #fff;
  font-size: 11px; letter-spacing: .3em; padding: 3px 14px 3px 17px;
  border-radius: 999px;
}
.plan h3 { margin: 0 0 6px; font-size: 19px; font-weight: 700; letter-spacing: .2em; }
.plan .price { font-size: 40px; font-weight: 900; margin: 14px 0 4px; letter-spacing: .02em; }
.plan .price .unit { font-size: 13px; font-weight: 400; color: var(--ink-30); letter-spacing: .1em; margin-left: 6px; }
.plan ul { list-style: none; margin: 20px 0 26px; padding: 0; flex: 1; }
.plan li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--ink-70); padding: 7px 0; }
.plan li svg { color: var(--crimson); flex: none; }

.price-note {
  text-align: center; margin: 30px 0 0;
  font-size: 12.5px; letter-spacing: .14em; color: var(--ink-30);
}

/* ---------- FAQ ---------- */
.faq-wrap { display: grid; grid-template-columns: 4fr 6fr; gap: 56px; align-items: start; }
.faq-wrap h2 { margin: 14px 0 0; font-size: clamp(26px, 3vw, 36px); font-weight: 900; letter-spacing: .05em; line-height: 1.4; }

.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  background: none; border: none; text-align: left;
  padding: 21px 4px;
  font-size: 16px; font-weight: 700; letter-spacing: .04em; color: var(--ink);
  transition: color .25s;
}
.faq-q:hover { color: var(--crimson); }
.pm { position: relative; width: 14px; height: 14px; flex: none; }
.pm::before, .pm::after {
  content: ""; position: absolute; background: var(--crimson);
  transition: transform .35s var(--ease);
}
.pm::before { left: 0; right: 0; top: 6.2px; height: 1.6px; }
.pm::after { top: 0; bottom: 0; left: 6.2px; width: 1.6px; }
.faq-item.open .pm::after { transform: scaleY(0); }
.faq-a { overflow: hidden; max-height: 0; transition: max-height .45s var(--ease); }
.faq-a p { margin: 0; padding: 0 32px 22px 4px; font-size: 14.5px; line-height: 1.9; color: var(--ink-50); }

/* ---------- 结尾 ---------- */
.final {
  position: relative; overflow: hidden;
  background: linear-gradient(150deg, #8c0d17, var(--crimson) 45%, var(--crimson-deep));
  background-size: 160% 160%;
  color: #fff; text-align: center;
  padding: 116px 0;
  animation: aura 12s ease-in-out infinite alternate;
}
.final::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 26px 26px;
}
.final .wrap { position: relative; }
.final .seal {
  display: inline-flex; align-items: center; justify-content: center;
  width: 58px; height: 58px;
  border: 1.5px solid rgba(255, 255, 255, .5); border-radius: 12px;
  font-size: 26px; font-weight: 900;
  margin-bottom: 28px;
  transform: rotate(-4deg);
}
.final h2 {
  margin: 0 0 36px;
  font-size: clamp(32px, 4.6vw, 54px);
  font-weight: 900; letter-spacing: .06em; line-height: 1.35;
}
.final .actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.footer {
  background:
    radial-gradient(720px 300px at 86% 0, rgba(165, 18, 30, .16), transparent 62%),
    radial-gradient(560px 280px at 6% 100%, rgba(185, 138, 60, .10), transparent 65%),
    #201913;
  color: rgba(251, 248, 242, .88);
  padding: 72px 0 0;
}
.footer .wrap { position: relative; }

.foot-brand {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; flex-wrap: wrap;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(251, 248, 242, .12);
}
.foot-logo { display: flex; align-items: center; gap: 16px; }
.foot-logo img {
  width: 52px; height: 52px; border-radius: 9px;
  filter: brightness(0) invert(1);
  box-shadow: 0 10px 30px -8px rgba(0, 0, 0, .55), 0 0 0 1px rgba(251, 248, 242, .14);
  transition: transform .5s var(--ease);
}
.foot-logo:hover img { transform: rotate(-5deg) scale(1.05); }
.foot-logo-txt strong {
  display: block;
  font-size: 27px; font-weight: 900; letter-spacing: .2em;
  color: #fbf8f2; line-height: 1.3;
}
.foot-logo-txt em {
  display: block; margin-top: 5px;
  font-style: normal;
  font-size: 10.5px; letter-spacing: .3em;
  color: rgba(211, 160, 95, .85);
  white-space: nowrap;
}
.foot-slogan {
  margin: 0; text-align: right;
  font-size: 15px; letter-spacing: .1em; color: rgba(251, 248, 242, .66);
}
.foot-slogan span {
  display: block; margin-top: 4px;
  font-size: 11px; letter-spacing: .08em; color: rgba(251, 248, 242, .34);
}

.foot-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px;
  max-width: 620px;
  padding: 38px 0 48px;
}
.foot-col h4 {
  margin: 0 0 16px;
  font-size: 12px; font-weight: 700; letter-spacing: .34em;
  color: rgba(211, 160, 95, .8);
}
.foot-col a {
  display: block; padding: 5px 0;
  font-size: 14px; letter-spacing: .1em;
  color: rgba(251, 248, 242, .62);
  transition: color .2s, transform .3s var(--ease);
}
.foot-col a:hover { color: #fbf8f2; transform: translateX(3px); }

.foot-bottom { border-top: 1px solid rgba(251, 248, 242, .1); background: rgba(0, 0, 0, .22); }
.foot-bottom-in {
  display: flex; align-items: center; justify-content: center; gap: 8px 26px; flex-wrap: wrap;
  padding-top: 9px; padding-bottom: 9px;
}
.cp { margin: 0; font-size: 12.5px; letter-spacing: .1em; color: rgba(251, 248, 242, .45); }
.beian {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; letter-spacing: .08em;
  color: rgba(251, 248, 242, .55);
  transition: color .2s;
}
.beian img { width: 16px; height: 18px; object-fit: contain; }
.beian:hover { color: rgba(251, 248, 242, .9); }

/* ---------- 返回顶部 ---------- */
#backTop {
  position: fixed; right: 24px; bottom: 26px; z-index: 150;
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(23, 19, 15, .82); color: var(--gold-soft);
  border: none; display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(8px);
  box-shadow: 0 10px 26px -8px rgba(23, 19, 15, .5);
  opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity .35s, transform .35s, visibility .35s, background .25s, color .25s;
}
#backTop.show { opacity: 1; visibility: visible; transform: none; }
#backTop:hover { background: var(--crimson); color: #fff; }

/* =========================================================
   滚动出现
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  filter: blur(5px);
  transition: opacity .9s var(--ease), transform .9s var(--ease), filter .9s var(--ease);
  transition-delay: var(--d, 0s);
  will-change: opacity, transform, filter;
}
.reveal.in { opacity: 1; transform: none; filter: none; }

html.noanim .reveal { opacity: 1; transform: none; filter: none; transition: none; }
html.noanim .hero-aura, html.noanim .final, html.noanim .stage-glow { animation: none; }
html.noanim .caret { animation: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-actions .btn { display: none; }
  .drawer { display: block; }

  .bento { grid-template-columns: repeat(2, 1fr); }
  .c-4, .c-2 { grid-column: span 2; }

  .tab-panel.on { grid-template-columns: 1fr; gap: 28px; }
  .price-grid { grid-template-columns: 1fr; max-width: 460px; }
  .faq-wrap { grid-template-columns: 1fr; gap: 28px; }

  .app-body { flex-direction: column; }
  .mock-side { width: auto; border-right: none; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
  .mock-user { border: none; margin-bottom: 0; padding-bottom: 0; }
  .mock-label { display: none; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 20px; }
  .section { padding: 72px 0; }
  .hero { padding: 56px 0 24px; }
  .hero-cta .btn { width: 100%; }
  .notice { font-size: 12px; padding-right: 44px; }
  .final { padding: 84px 0; }
  #backTop { right: 16px; bottom: 18px; width: 40px; height: 40px; }
  .foot-brand { align-items: flex-start; flex-direction: column; gap: 20px; }
  .foot-slogan { text-align: left; }
  .brand { gap: 10px; }
  .brand img { width: 34px; height: 34px; border-radius: 7px; }
  .brand-txt strong { font-size: 19px; }
  .brand-txt em { font-size: 8px; letter-spacing: .24em; }
  .foot-grid { grid-template-columns: repeat(2, 1fr); }
  .foot-bottom-in { justify-content: center; text-align: center; }
}