/* ========== 茶奥 CHAAO — 品牌资产页 ========== */
:root {
  --cream: #f2efe4;
  --cream-deep: #ebe7d3;
  --paper: rgba(239, 235, 206, 0.55);
  --ink: #1c320f;
  --ink-soft: #3d5231;
  --ink-faint: rgba(28, 50, 15, 0.55);
  --green: #7eb042;
  --green-deep: #27431a;
  --green-deeper: #1d3313;
  --amber: #e59a28;
  --amber-deep: #b57708;
  --cinnabar: #b3402a;
  --line: rgba(28, 50, 15, 0.16);
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --col: calc((100vw - min(90vw, 1200px)) / 2);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 92px; }

:focus-visible { outline: 2px solid var(--amber-deep); outline-offset: 3px; border-radius: 2px; }

body {
  font-family: var(--sans);
  background: var(--cream);
  color: var(--ink);
  line-height: 1.85;
  font-size: 16px;
  opacity: 0;
  transition: opacity 0.6s ease;
  overflow-x: hidden;
}
body.loaded { opacity: 1; }

/* 纸纹肌理 */
body::after {
  content: ""; position: fixed; inset: 0; z-index: 100; pointer-events: none;
  opacity: 0.5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}

::selection { background: var(--green); color: #fff; }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--cream-deep); }
::-webkit-scrollbar-thumb { background: rgba(45, 74, 26, 0.35); border-radius: 8px; border: 2px solid var(--cream-deep); }
::-webkit-scrollbar-thumb:hover { background: var(--green-deep); }

/* ---------- 通用排版 ---------- */
h1, h2, h3, .serif { font-family: var(--serif); font-weight: 600; line-height: 1.3; }

.label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.label b { color: var(--amber-deep); font-weight: 500; }

.wrap { width: min(90vw, 1200px); margin: 0 auto; }

section { padding: clamp(90px, 12vw, 160px) 0; position: relative; }

.sec-head { display: flex; align-items: baseline; gap: 24px; margin-bottom: clamp(40px, 6vw, 72px); flex-wrap: wrap; }
.sec-head .no { font-family: var(--mono); font-size: 13px; color: var(--amber-deep); letter-spacing: 0.1em; }
.sec-head h2 { font-size: clamp(28px, 4.2vw, 46px); letter-spacing: 0.06em; position: relative; }
.sec-head h2::after {
  content: ""; position: absolute; left: 2px; bottom: -12px;
  width: 56px; height: 2px; background: var(--amber);
}
.sec-head .label { margin-left: auto; }

/* 竖排点缀 */
.v-text {
  writing-mode: vertical-rl;
  font-family: var(--serif);
  letter-spacing: 0.5em;
  color: var(--ink-faint);
  user-select: none;
}

/* 竖排英文装饰线 */
.hero-eng {
  position: absolute; left: var(--col); top: 27vh;
  display: flex; align-items: center; gap: 18px;
}
.hero-eng span {
  writing-mode: vertical-rl;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.5em;
  color: rgba(28, 50, 15, 0.35);
}
.hero-eng::before {
  content: ""; width: 1px; height: 90px;
  background: linear-gradient(var(--amber), transparent);
}

/* ---------- 滚动显现 ---------- */
.rise { opacity: 0; transform: translateY(36px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.rise.in { opacity: 1; transform: none; }
.rise[data-delay="1"] { transition-delay: 0.12s; }
.rise[data-delay="2"] { transition-delay: 0.24s; }
.rise[data-delay="3"] { transition-delay: 0.36s; }

/* ---------- 顶部导航 ---------- */
header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: transform 0.45s var(--ease), background 0.3s ease, box-shadow 0.3s ease;
}
header.hidden { transform: translateY(-100%); }
header.scrolled { background: rgba(242, 239, 228, 0.9); backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--line); }
.nav { display: flex; align-items: center; gap: 32px; height: 72px; }
.nav .brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); flex: none; }
.nav .brand img { height: 34px; width: 34px; object-fit: contain; }
.nav .brand span { font-family: var(--serif); font-size: 20px; letter-spacing: 0.2em; font-weight: 600; white-space: nowrap; }
.nav .brand em { font-family: var(--mono); font-style: normal; font-size: 10px; letter-spacing: 0.2em; color: var(--ink-faint); }
.nav nav { margin-left: auto; display: flex; gap: 26px; }
.nav nav a {
  font-size: 14px; color: var(--ink-soft); text-decoration: none;
  padding-bottom: 3px;
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1px;
  transition: background-size 0.3s ease;
}
.nav nav a:hover, .nav nav a.active { background-size: 100% 1px; }
.nav nav a.active { color: var(--amber-deep); }

/* 移动端菜单 */
.menu-toggle {
  display: none; background: none; border: 0; cursor: pointer;
  width: 40px; height: 40px; position: relative; margin-left: 4px;
}
.menu-toggle span {
  position: absolute; left: 9px; right: 9px; height: 2px;
  background: var(--ink); border-radius: 2px;
  transition: transform 0.35s var(--ease), top 0.35s var(--ease);
}
.menu-toggle span:first-child { top: 15px; }
.menu-toggle span:last-child { top: 23px; }
header.menu-open .menu-toggle span:first-child { top: 19px; transform: rotate(45deg); }
header.menu-open .menu-toggle span:last-child { top: 19px; transform: rotate(-45deg); }
.m-panel {
  display: none; flex-direction: column;
  background: rgba(242, 239, 228, 0.97); backdrop-filter: blur(14px);
  border-top: 1px solid var(--line);
  padding: 10px 5vw 26px;
}
.m-panel a {
  font-family: var(--serif); font-size: 18px; letter-spacing: 0.08em;
  color: var(--ink); text-decoration: none;
  padding: 15px 0; border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center;
}
.m-panel a::after { content: "→"; font-family: var(--mono); font-size: 13px; color: var(--amber-deep); }
.m-panel a:last-child { border-bottom: 0; color: var(--amber-deep); }
header.menu-open .m-panel { display: flex; }

/* 描金按钮 */
.cta {
  position: relative; overflow: hidden;
  flex: none; white-space: nowrap;
  font-size: 13px; color: #fff8ea;
  background: linear-gradient(135deg, var(--green-deep), #3a5c25);
  border: 1px solid rgba(229, 154, 40, 0.55);
  padding: 10px 22px; border-radius: 999px; text-decoration: none;
  letter-spacing: 0.12em;
  transition: transform 0.3s var(--ease), box-shadow 0.3s ease;
}
.cta::after {
  content: ""; position: absolute; top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 235, 190, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s var(--ease);
}
.cta:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(39, 67, 26, 0.3); }
.cta:hover::after { left: 130%; }
@media (max-width: 860px) {
  .nav { gap: 14px; }
  .nav .desk-nav { display: none; }
  .nav .cta { margin-left: auto; }
  .menu-toggle { display: block; }
}
@media (max-width: 480px) {
  .nav .brand em { display: none; }
  .nav .cta { padding: 9px 16px; font-size: 12px; }
}

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 120px 0 0; overflow: hidden; position: relative;
  background:
    radial-gradient(1200px 600px at 85% 15%, rgba(126, 176, 66, 0.14), transparent 60%),
    radial-gradient(900px 500px at 8% 85%, rgba(229, 154, 40, 0.1), transparent 60%),
    linear-gradient(var(--cream), var(--cream-deep));
}
.hero .topline {
  position: absolute; top: 110px; left: var(--col);
  display: flex; gap: 14px; align-items: center;
}
.hero .topline .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 5px rgba(229, 154, 40, 0.18); }

.hero .v-rail {
  position: absolute; right: var(--col); top: 16vh;
  display: flex; gap: 18px; align-items: flex-start;
}
.hero .v-rail .v-text { font-size: clamp(15px, 1.5vw, 19px); }
.hero .v-rail .v-text + .v-text { padding-top: 64px; color: var(--amber-deep); }

.hero-mark {
  position: absolute; top: 14vh; right: 16vw;
  width: clamp(170px, 23vw, 300px);
  will-change: transform;
}
.hero-mark::before {
  content: ""; position: absolute; inset: -14%;
  border: 1px solid rgba(181, 119, 8, 0.3); border-radius: 50%;
  animation: spin 46s linear infinite;
}
.hero-mark::after {
  content: ""; position: absolute; inset: -7%;
  border: 1px dashed rgba(39, 67, 26, 0.22); border-radius: 50%;
  animation: spin 60s linear infinite reverse;
}
.hero-mark img { width: 100%; position: relative; filter: drop-shadow(0 30px 50px rgba(45, 74, 26, 0.25)); }

.hero .seal { position: absolute; left: calc(var(--col) + min(46vw, 560px)); bottom: 46vh; }

.hero-title { width: min(90vw, 1200px); margin: 0 auto; position: relative; z-index: 2; }
.hero-title h1 {
  font-size: clamp(92px, 17vw, 244px);
  font-weight: 900; letter-spacing: 0.08em;
  line-height: 1.02; color: var(--ink);
  text-shadow: 0 2px 0 rgba(255,255,255,0.4);
}
.hero-title h1 .reg { font-family: var(--mono); font-size: clamp(14px, 1.6vw, 22px); vertical-align: super; letter-spacing: 0; color: var(--amber-deep); font-weight: 400; }
.hero-sub {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 32px; flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding: 28px 0 34px; margin-top: 12px;
}
.hero-sub p { font-family: var(--serif); font-size: clamp(17px, 2vw, 22px); color: var(--ink-soft); max-width: 34em; letter-spacing: 0.04em; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-tags span {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em;
  border: 1px solid rgba(28, 50, 15, 0.28); border-radius: 999px; padding: 6px 14px; color: var(--ink-soft);
  background: rgba(255,255,255,0.35);
  transition: border-color 0.3s ease, color 0.3s ease, transform 0.3s var(--ease);
}
.hero-tags span:hover { border-color: var(--amber-deep); color: var(--amber-deep); transform: translateY(-2px); }

/* 漂浮叶片 */
.leaf { position: absolute; pointer-events: none; will-change: transform; }
.leaf svg { display: block; }
.float-a { animation: floatA 7s ease-in-out infinite; }
.float-b { animation: floatB 9s ease-in-out infinite; }
.float-c { animation: floatA 11s ease-in-out infinite reverse; }
@keyframes floatA { 0%,100% { transform: translateY(0) rotate(0deg); } 50% { transform: translateY(-22px) rotate(6deg); } }
@keyframes floatB { 0%,100% { transform: translateY(0) rotate(0deg); } 50% { transform: translateY(18px) rotate(-8deg); } }
.scroll-hint {
  position: absolute; bottom: 34px; left: var(--col);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.3em; color: var(--ink-faint);
  display: flex; align-items: center; gap: 12px;
}
.scroll-hint::after { content: ""; width: 1px; height: 42px; background: var(--ink-faint); animation: drip 2s ease-in-out infinite; transform-origin: top; }
@keyframes drip { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(0); transform-origin: bottom; } }
@media (max-width: 900px) {
  .hero { justify-content: flex-start; padding-top: 0; }
  .hero .v-rail, .hero .hero-eng { display: none; }
  .hero .topline {
    position: static; width: min(90vw, 1200px); margin: 0 auto;
    padding-top: 104px; flex-wrap: wrap; gap: 8px 12px;
  }
  .hero .topline .label { letter-spacing: 0.14em; }
  .hero-mark {
    position: relative; top: auto; right: auto;
    width: 150px; margin: 40px auto 20px;
  }
  .hero-title { margin-top: auto; }
  .hero .scroll-hint { display: none; }
  .hero-sub { padding: 22px 0 28px; }
}

/* ---------- 滚动缎带 ---------- */
.marquee {
  background: var(--green-deeper); color: rgba(238, 242, 226, 0.85);
  overflow: hidden; padding: 18px 0;
  border-top: 1px solid rgba(229, 154, 40, 0.35);
  border-bottom: 1px solid rgba(229, 154, 40, 0.35);
}
.marquee .track {
  display: flex; gap: 0; width: max-content;
  animation: marquee 30s linear infinite;
}
.marquee span {
  font-family: var(--serif); font-size: 15px; letter-spacing: 0.4em;
  padding: 0 34px; white-space: nowrap;
  display: flex; align-items: center; gap: 34px;
}
.marquee span::after { content: "◆"; font-size: 8px; color: var(--amber); letter-spacing: 0; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 释名 ---------- */
.ming { background: var(--cream); }
.ming .grid { display: grid; grid-template-columns: 5fr 6fr; gap: clamp(40px, 7vw, 100px); align-items: start; }
.ming .chars { display: flex; gap: clamp(20px, 4vw, 48px); position: sticky; top: 130px; }
.ming .char { text-align: center; position: relative; }
.ming .char b {
  display: block; font-family: var(--serif); font-weight: 900;
  font-size: clamp(72px, 9vw, 128px); line-height: 1.15;
  border-bottom: 1px solid var(--line); padding-bottom: 12px;
  background: linear-gradient(160deg, var(--ink) 60%, var(--green-deep));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.ming .char i { font-family: var(--mono); font-style: normal; font-size: 12px; letter-spacing: 0.3em; color: var(--ink-faint); display: block; margin-top: 10px; }
.ming .char::before {
  content: ""; position: absolute; inset: -18px -8px auto; height: 4px;
  background: linear-gradient(90deg, var(--amber), transparent); opacity: 0.5;
}
.ming h3 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 24px; letter-spacing: 0.04em; }
.ming p { color: var(--ink-soft); margin-bottom: 1.2em; }
.ming .pull {
  font-family: var(--serif); font-size: clamp(19px, 2.2vw, 24px);
  color: var(--ink); border-left: 3px solid var(--amber);
  padding: 6px 0 6px 24px; margin: 36px 0; line-height: 2;
  position: relative;
}
.ming .pull::before {
  content: "“"; position: absolute; left: -6px; top: -34px;
  font-size: 72px; color: rgba(181, 119, 8, 0.2); font-family: var(--serif);
}
@media (max-width: 860px) { .ming .grid { grid-template-columns: 1fr; } .ming .chars { position: static; } }

/* ---------- 品牌故事 ---------- */
.story {
  background:
    radial-gradient(1000px 500px at 90% 10%, rgba(126, 176, 66, 0.16), transparent 55%),
    radial-gradient(700px 400px at 5% 95%, rgba(229, 154, 40, 0.1), transparent 55%),
    linear-gradient(170deg, var(--green-deep), var(--green-deeper));
  color: #eef2e2; overflow: hidden;
}
.story .label { color: rgba(238, 242, 226, 0.5); }
.story .grid { display: grid; grid-template-columns: 6fr 5fr; gap: clamp(40px, 7vw, 100px); align-items: center; }
.story h2 { font-size: clamp(28px, 4vw, 44px); letter-spacing: 0.06em; }
.story .sec-head h2::after { background: var(--amber); }
.story h2 .amber { color: var(--amber); }
.story p { color: rgba(238, 242, 226, 0.82); margin-bottom: 1.3em; font-size: 15.5px; }
.story .verse {
  font-family: var(--serif); font-size: clamp(20px, 2.4vw, 27px); line-height: 2.1;
  color: #fff; margin: 36px 0; letter-spacing: 0.1em;
  position: relative; padding-left: 26px;
}
.story .verse::before {
  content: ""; position: absolute; left: 0; top: 12px; bottom: 12px; width: 2px;
  background: linear-gradient(var(--amber), transparent);
}
.story .markbox { position: relative; display: flex; justify-content: center; }
.story .markbox img {
  width: clamp(220px, 26vw, 360px); border-radius: 28px;
  box-shadow: 0 50px 90px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255,255,255,0.08);
}
.story .markbox .ring {
  position: absolute; inset: -44px; border: 1px solid rgba(238, 242, 226, 0.16);
  border-radius: 50%; animation: spin 40s linear infinite;
}
.story .markbox .ring::before {
  content: ""; position: absolute; top: -4px; left: 50%;
  width: 8px; height: 8px; border-radius: 50%; background: var(--amber);
}
.story .markbox .ring2 {
  position: absolute; inset: -24px; border: 1px dashed rgba(229, 154, 40, 0.3);
  border-radius: 50%; animation: spin 30s linear infinite reverse;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (max-width: 860px) { .story .grid { grid-template-columns: 1fr; } }

/* ---------- 商标资产 ---------- */
.assets { background: var(--cream); }
.assets .classes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.assets .cls {
  background: var(--cream); padding: clamp(26px, 3vw, 40px);
  position: relative; min-height: 250px; overflow: hidden;
  display: flex; flex-direction: column;
  transition: background 0.4s ease, transform 0.4s var(--ease), box-shadow 0.4s ease;
}
.assets .cls::before {
  content: attr(data-num);
  position: absolute; right: -8px; bottom: -30px;
  font-family: var(--serif); font-weight: 900;
  font-size: 150px; line-height: 1;
  color: rgba(39, 67, 26, 0.05);
  transition: color 0.4s ease, transform 0.5s var(--ease);
  pointer-events: none;
}
.assets .cls::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--amber), transparent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.5s var(--ease);
}
.assets .cls:hover { background: #fdfcf6; transform: translateY(-6px); box-shadow: 0 30px 60px rgba(39, 67, 26, 0.12); z-index: 2; }
.assets .cls:hover::before { color: rgba(181, 119, 8, 0.1); transform: translateY(-8px); }
.assets .cls:hover::after { transform: scaleX(1); }
.assets .cls .num { font-family: var(--mono); font-size: clamp(30px, 3.4vw, 44px); color: var(--amber-deep); letter-spacing: 0.02em; }
.assets .cls .num small { font-size: 12px; letter-spacing: 0.2em; color: var(--ink-faint); margin-left: 8px; }
.assets .cls h3 { font-size: 19px; margin: 14px 0 8px; letter-spacing: 0.05em; }
.assets .cls p { font-size: 13.5px; color: var(--ink-faint); line-height: 1.9; flex: 1; position: relative; }
.assets .cls .use { font-size: 12.5px; color: var(--green-deep); border-top: 1px dashed var(--line); padding-top: 12px; margin-top: 14px; position: relative; }
.assets .cls .core-tag {
  position: absolute; top: 18px; right: 18px; z-index: 1;
  font-size: 10px; letter-spacing: 0.2em; color: #fff8ea;
  background: linear-gradient(135deg, var(--green-deep), #3a5c25);
  border: 1px solid rgba(229, 154, 40, 0.5);
  padding: 4px 10px; border-radius: 999px;
}
.assets .note {
  margin-top: 36px; padding: 28px 32px;
  background: linear-gradient(120deg, var(--paper), rgba(229, 154, 40, 0.08));
  border-left: 3px solid var(--amber); font-size: 14.5px; color: var(--ink-soft);
  border-radius: 0 14px 14px 0;
}
.assets .note b { color: var(--ink); }
@media (max-width: 960px) { .assets .classes { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .assets .classes { grid-template-columns: 1fr; } }

/* ---------- 价值分析 ---------- */
.value { background: linear-gradient(var(--cream-deep), var(--cream)); }
.value .grid { display: grid; grid-template-columns: 6fr 5fr; gap: clamp(40px, 7vw, 100px); }
.value .points { display: flex; flex-direction: column; }
.value .point { padding: 28px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 56px 1fr; gap: 20px; transition: padding-left 0.4s var(--ease); }
.value .point:hover { padding-left: 10px; }
.value .point:first-child { border-top: 1px solid var(--line); }
.value .point .idx {
  font-family: var(--serif); font-size: 26px; color: var(--amber-deep); padding-top: 2px;
  border-right: 1px solid var(--line);
}
.value .point h3 { font-size: 19px; margin-bottom: 8px; letter-spacing: 0.04em; }
.value .point p { font-size: 14px; color: var(--ink-soft); }

/* 受让即得 */
.deliver {
  align-self: start; position: sticky; top: 110px;
  background:
    radial-gradient(400px 200px at 90% 0%, rgba(126, 176, 66, 0.18), transparent 60%),
    linear-gradient(160deg, var(--green-deep), var(--green-deeper));
  color: #eef2e2; border-radius: 22px;
  padding: clamp(30px, 4vw, 46px);
  box-shadow: 0 40px 80px rgba(29, 51, 19, 0.3);
  border: 1px solid rgba(229, 154, 40, 0.3);
}
.deliver .label { color: rgba(238, 242, 226, 0.5); }
.deliver h3 { font-size: 24px; margin: 14px 0 8px; letter-spacing: 0.05em; }
.deliver > p { font-size: 13px; color: rgba(238, 242, 226, 0.6); margin-bottom: 22px; }
.deliver ul { list-style: none; }
.deliver li {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 15px 0; border-bottom: 1px solid rgba(238, 242, 226, 0.14);
  font-size: 14.5px;
}
.deliver li:last-child { border-bottom: 0; }
.deliver li svg { flex: none; margin-top: 5px; }
.deliver li b { color: var(--amber); font-weight: 600; }
@media (max-width: 860px) { .value .grid { grid-template-columns: 1fr; } .deliver { position: static; } }

/* ---------- 市场数据 ---------- */
.market { background: var(--cream); }
.market .stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(20px, 3vw, 40px); }
.market .stat {
  border-top: 2px solid var(--ink); padding-top: 22px; position: relative;
  transition: transform 0.4s var(--ease);
}
.market .stat:hover { transform: translateY(-4px); }
.market .stat::before {
  content: ""; position: absolute; top: -2px; left: 0; width: 0; height: 2px;
  background: var(--amber); transition: width 0.5s var(--ease);
}
.market .stat:hover::before { width: 100%; }
.market .stat b { font-family: var(--serif); font-size: clamp(34px, 4vw, 52px); font-weight: 900; display: block; line-height: 1.2; }
.market .stat b i { font-style: normal; font-size: 0.45em; color: var(--amber-deep); margin-left: 4px; }
.market .stat span { font-size: 13px; color: var(--ink-faint); display: block; margin-top: 8px; line-height: 1.8; }
.market .src { margin-top: 30px; font-family: var(--mono); font-size: 11px; color: var(--ink-faint); letter-spacing: 0.05em; }
@media (max-width: 860px) { .market .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------- 买家画像 ---------- */
.buyer { background: linear-gradient(var(--cream), var(--cream-deep)); }
.buyer .cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(16px, 2vw, 28px); }
.buyer .card {
  border: 1px solid var(--line); border-radius: 20px; padding: 32px 26px;
  background: rgba(255, 255, 255, 0.45); position: relative; overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s ease, background 0.4s ease, border-color 0.4s ease;
}
.buyer .card::before {
  content: ""; position: absolute; top: 0; left: 24px; right: 24px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--amber), transparent);
  opacity: 0; transition: opacity 0.4s ease;
}
.buyer .card:hover { transform: translateY(-8px); box-shadow: 0 30px 60px rgba(45, 74, 26, 0.14); background: #fdfcf6; border-color: rgba(181, 119, 8, 0.35); }
.buyer .card:hover::before { opacity: 1; }
.buyer .card .glyph { width: 46px; height: 46px; margin-bottom: 22px; }
.buyer .card h3 { font-size: 17px; margin-bottom: 10px; letter-spacing: 0.04em; }
.buyer .card p { font-size: 13px; color: var(--ink-faint); line-height: 1.9; }
@media (max-width: 960px) { .buyer .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .buyer .cards { grid-template-columns: 1fr; } }

/* ---------- 流程 ---------- */
.flow { background: var(--cream); }
.flow ol { list-style: none; counter-reset: step; }
.flow li {
  counter-increment: step; display: grid; grid-template-columns: 120px 1fr 2fr;
  gap: 24px; padding: 32px 0; border-bottom: 1px solid var(--line); align-items: baseline;
  transition: background 0.4s ease, padding-left 0.4s var(--ease);
}
.flow li:hover { padding-left: 12px; }
.flow li:first-child { border-top: 1px solid var(--line); }
.flow li::before {
  content: "0" counter(step);
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(30px, 3.2vw, 44px);
  background: linear-gradient(160deg, var(--amber), var(--amber-deep));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.flow li h3 { font-size: 19px; letter-spacing: 0.05em; }
.flow li p { font-size: 14px; color: var(--ink-soft); }
@media (max-width: 720px) { .flow li { grid-template-columns: 64px 1fr; } .flow li p { grid-column: 2; } }

/* ---------- 商标档案 ---------- */
.dossier { background: linear-gradient(var(--cream), var(--cream-deep)); }
.dossier .sheet {
  border: 1px solid var(--line); border-radius: 22px; overflow: hidden;
  background: rgba(255, 255, 255, 0.5);
  box-shadow: 0 30px 70px rgba(39, 67, 26, 0.08);
}
.dossier .row {
  display: grid; grid-template-columns: 220px 1fr;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease;
}
.dossier .row:hover { background: rgba(229, 154, 40, 0.06); }
.dossier .row:last-child { border-bottom: 0; }
.dossier .row dt {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.2em; color: var(--ink-faint);
  padding: 24px 28px; border-right: 1px solid var(--line);
  display: flex; align-items: center;
}
.dossier .row dd { padding: 24px 28px; font-size: 15px; letter-spacing: 0.02em; }
.dossier .row dd b { font-family: var(--serif); font-size: 18px; letter-spacing: 0.1em; }
.dossier .row dd .gold { color: var(--amber-deep); font-weight: 600; }
@media (max-width: 640px) { .dossier .row { grid-template-columns: 1fr; } .dossier .row dt { border-right: 0; border-bottom: 1px dashed var(--line); padding-bottom: 10px; } .dossier .row dd { padding-top: 12px; } }

/* ---------- FAQ ---------- */
.faq { background: var(--cream); }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-of-type { border-top: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 26px 40px 26px 0;
  font-family: var(--serif); font-size: clamp(16px, 1.8vw, 20px); letter-spacing: 0.03em;
  position: relative; transition: color 0.3s ease, padding-left 0.3s var(--ease);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font-family: var(--mono); font-size: 20px; color: var(--amber-deep); transition: transform 0.3s var(--ease);
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq summary:hover { color: var(--green-deep); padding-left: 8px; }
.faq details p { padding: 0 40px 26px 0; font-size: 14.5px; color: var(--ink-soft); }
.faq details[open] p { animation: faqIn 0.5s var(--ease); }
@keyframes faqIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* ---------- 联系 ---------- */
.contact {
  background:
    radial-gradient(900px 500px at 80% 20%, rgba(126, 176, 66, 0.18), transparent 55%),
    radial-gradient(600px 400px at 10% 90%, rgba(229, 154, 40, 0.12), transparent 55%),
    linear-gradient(160deg, var(--green-deep), var(--green-deeper));
  color: #eef2e2; text-align: center; overflow: hidden;
}
.contact .label { color: rgba(238, 242, 226, 0.5); }
.contact h2 { font-size: clamp(30px, 5vw, 56px); letter-spacing: 0.08em; margin: 22px 0 18px; }
.contact h2 .amber { color: var(--amber); }
.contact > .wrap > p { color: rgba(238, 242, 226, 0.75); max-width: 38em; margin: 0 auto 44px; font-size: 15.5px; }
.contact .ways { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.contact .way {
  border: 1px solid rgba(238, 242, 226, 0.22); border-radius: 18px;
  padding: 24px 36px; min-width: 240px;
  background: rgba(255, 255, 255, 0.03);
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s var(--ease);
}
.contact .way:hover { border-color: var(--amber); background: rgba(255, 255, 255, 0.06); transform: translateY(-4px); }
.contact .way .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.3em; color: rgba(238, 242, 226, 0.5); }
.contact .way .v { font-family: var(--serif); font-size: 20px; margin-top: 8px; letter-spacing: 0.05em; }
.contact .tip { margin-top: 36px; font-size: 12.5px; color: rgba(238, 242, 226, 0.5); }
.contact .leaf-bg { position: absolute; opacity: 0.1; pointer-events: none; }

/* ---------- 页脚 ---------- */
footer { background: #1b2e10; color: rgba(238, 242, 226, 0.6); padding: 64px 0 40px; }
footer .top { display: flex; align-items: center; gap: 18px; margin-bottom: 40px; }
footer .top img { height: 44px; width: 44px; object-fit: contain; }
footer .top span { font-family: var(--serif); font-size: 22px; letter-spacing: 0.2em; color: #eef2e2; }
footer .meta { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; font-size: 12.5px; border-top: 1px solid rgba(238, 242, 226, 0.12); padding-top: 26px; }
footer .meta nav { display: flex; gap: 22px; }
footer .meta a { color: rgba(238, 242, 226, 0.6); text-decoration: none; transition: color 0.3s ease; }
footer .meta a:hover { color: var(--amber); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}