/* =========================================================
   祥冠源 · 高端茶叶品牌管理  ——  样式
   设计方向：宣纸米白 × 墨色 × 朱砂红 × 鎏金
   ========================================================= */

/* ---------- 主题变量 ---------- */
:root {
  --paper:        #8f2a24;   /* 暗朱砂 主背景 */
  --paper-deep:   #7b211d;   /* 深一档 */
  --paper-light:  #a83c34;   /* 亮一档 */
  --ink:          #200a08;   /* 墨黑红 */
  --ink-2:        #2f0f0c;
  --ink-3:        #3c1511;
  --cream:        #f6eeda;   /* 宣纸米 */
  --stone:        rgba(246,238,218,.78);   /* 次级文字 */
  --stone-light:  rgba(246,238,218,.52);
  --cinnabar:     #c9a86a;   /* 香槟金 主强调 */
  --cinnabar-deep:#a5864f;
  --gold:         #c9a86a;   /* 香槟金 */
  --gold-bright:  #e7cd94;   /* 亮香槟 */
  --tea:          #c9a86a;   /* 茶图标金 */
  --tea-deep:     #a5864f;
  --line:         rgba(246,238,218,.15);
  --line-light:   rgba(246,238,218,.26);

  --font-serif: "Songti SC", "Noto Serif CJK SC", "Noto Serif SC", "Source Han Serif SC", "Source Han Serif CN", "STSong", "SimSun", serif;
  --font-sans:  "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans SC", "WenQuanYi Micro Hei", sans-serif;
  --font-en:    "Didot", "Bodoni MT", "Playfair Display", "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-logo:  "Kaiti SC", "KaiTi", "STKaiti", "华文楷体", "楷体", "Noto Serif CJK SC", "Noto Serif SC", "Songti SC", serif;

  --ease: cubic-bezier(.22,.61,.36,1);
  --shadow: 0 24px 64px -32px rgba(10,4,2,.55);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 92px; -webkit-text-size-adjust: 100%; overflow-x: hidden; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

/* 全页面宣纸颗粒纹理 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: .05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }

::selection { background: var(--gold-bright); color: var(--ink-3); }

/* 自定义滚动条 */
::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--paper-deep); }
::-webkit-scrollbar-thumb { background: var(--ink-3); border-radius: 6px; border: 2px solid var(--paper-deep); }
::-webkit-scrollbar-thumb:hover { background: var(--cinnabar); }

.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- 通用元素 ---------- */
.section { padding: 130px 0; position: relative; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 16px 40px; font-size: 14.5px; letter-spacing: .16em;
  border: 1px solid transparent; transition: all .35s var(--ease);
  position: relative; overflow: hidden; font-weight: 500;
}
.btn-sm { padding: 10px 24px; font-size: 13px; }
.btn-gold {
  background: linear-gradient(135deg, var(--gold-bright), var(--gold) 55%, var(--cinnabar-deep));
  color: #261d10; border-color: transparent;
  box-shadow: 0 12px 30px -14px rgba(165,134,79,.85);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 18px 38px -14px rgba(165,134,79,.95); }
.btn-ghost { color: var(--cream); border-color: var(--line-light); }
.btn-ghost:hover { background: rgba(246,238,218,.08); border-color: var(--gold); color: var(--gold-bright); transform: translateY(-2px); }
.btn-block { width: 100%; }

/* 区块标题 */
.section-head { max-width: 640px; margin: 0 auto 76px; text-align: center; }
.head-en {
  display: block; font-family: var(--font-en); letter-spacing: .46em;
  font-size: 12px; color: var(--cinnabar); margin-bottom: 18px; text-transform: uppercase;
}
.head-en.light { color: var(--gold); }
.head-title {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(34px, 5vw, 50px); letter-spacing: .12em; line-height: 1.3;
}
.head-title span { color: var(--cinnabar); position: relative; }
.head-title span::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cinnabar), transparent);
}
.head-line { margin-top: 30px; display: flex; justify-content: center; }
.head-line span {
  display: block; height: 1px; width: 200px; position: relative; background: var(--line);
}
.head-line span::before, .head-line span::after {
  content: ""; position: absolute; top: 50%; width: 5px; height: 5px;
  background: var(--cinnabar); transform: translateY(-50%) rotate(45deg);
}
.head-line span::before { left: -3px; }
.head-line span::after { right: -3px; }
.head-line.light span { background: var(--line-light); }
.head-line.light span::before, .head-line.light span::after { background: var(--gold); }
.head-sub { margin-top: 22px; color: var(--stone); font-size: 15px; letter-spacing: .08em; }

/* 回纹分隔条 */
.meander-strip { height: 26px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='24'%3E%3Cpath d='M0 0 H32 V12 H14 V24 H46 V0 H64' fill='none' stroke='%23c9a86a' stroke-width='1.4'/%3E%3C/svg%3E"); background-repeat: repeat-x; background-size: 64px 24px; opacity: .5; }

/* 渐入动画（JS 开启后生效） */
.js .reveal { opacity: 0; transform: translateY(30px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0s); }
.js .reveal.visible { opacity: 1; transform: none; }

/* ---------- 滚动进度条 ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--gold), var(--gold-bright));
  z-index: 10000; transition: width .1s linear;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: padding .4s var(--ease);
  padding: 20px 0;
}
/* 独立背景层：毛玻璃放此层，避免 backdrop-filter 成为后代 fixed 菜单的包含块 */
.header-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: rgba(20,7,5,0);
  transition: background .4s var(--ease), box-shadow .4s var(--ease), backdrop-filter .4s var(--ease), -webkit-backdrop-filter .4s var(--ease);
}
.site-header.scrolled .header-bg {
  background: rgba(20,7,5,.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 10px 40px -18px rgba(0,0,0,.6);
}
.site-header.scrolled { padding: 10px 0; }
.nav-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: flex; align-items: center; gap: 16px; }
.brand-seal { width: 84px; height: 84px; flex-shrink: 0; object-fit: contain; transition: transform .4s var(--ease); }
.brand:hover .brand-seal { transform: rotate(-6deg); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-family: var(--font-logo); font-weight: 700; font-size: 34px; letter-spacing: .14em; color: var(--cream); }
.brand-text em { font-family: var(--font-en); font-size: 11px; letter-spacing: .34em; color: var(--gold); margin-top: 4px; font-style: normal; }

.main-nav { display: flex; align-items: center; gap: 34px; }
.main-nav a {
  color: var(--cream); font-size: 15px; letter-spacing: .1em; position: relative; padding: 4px 0;
  opacity: .85; transition: color .3s, opacity .3s;
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: -3px; height: 1px; width: 0;
  background: var(--gold); transition: width .35s var(--ease);
}
.main-nav a:hover { color: var(--gold-bright); opacity: 1; }
.main-nav a:hover::after { width: 100%; }
.main-nav a.active { color: var(--gold-bright); opacity: 1; }
.main-nav a.active::after { width: 100%; }

.nav-cta { flex-shrink: 0; }

.burger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.burger span { display: block; width: 26px; height: 2px; background: var(--cream); transition: all .35s var(--ease); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  color: var(--cream); overflow: hidden;
  background: linear-gradient(178deg, #170705 0%, #2f0f0c 55%, #4a1c15 100%);
}
.hero-bg { position: absolute; inset: 0; }
.hero-svg { position: absolute; inset: 0; width: 100%; height: 100%; }

.ink-blot { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .35; }
.ink-blot-1 { width: 460px; height: 460px; right: -120px; top: -80px; background: radial-gradient(circle, rgba(201,168,106,.32), transparent 70%); animation: drift 14s ease-in-out infinite alternate; }
.ink-blot-2 { width: 380px; height: 380px; left: -100px; bottom: 10%; background: radial-gradient(circle, rgba(201,168,106,.2), transparent 70%); animation: drift 18s ease-in-out infinite alternate-reverse; }

@keyframes drift { from { transform: translate(0,0) scale(1); } to { transform: translate(40px,30px) scale(1.1); } }

.hero-content { position: relative; z-index: 2; padding: 130px 0 90px; }
.hero-eyebrow {
  font-family: var(--font-en); letter-spacing: .55em; font-size: 12px; color: var(--gold);
  margin-bottom: 30px; text-transform: uppercase;
}
.hero-title {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(46px, 8vw, 92px); line-height: 1.2; letter-spacing: .14em;
  margin-bottom: 34px;
}
.hero-title .line { display: block; }
.hero-title .line:last-child { color: var(--gold); }
.hero-sub {
  font-size: clamp(15px, 2vw, 17px); color: rgba(246,238,218,.75); letter-spacing: .16em;
  max-width: 560px; margin-bottom: 50px;
}
.hero-cta { display: flex; gap: 20px; flex-wrap: wrap; }

.hero-side {
  position: absolute; right: 6%; bottom: 18%; z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
}
.hero-side-seal img { width: 92px; height: 92px; opacity: .95; object-fit: contain; animation: floaty 5s ease-in-out infinite; }
.hero-side-vertical {
  writing-mode: vertical-rl; letter-spacing: .5em; font-size: 14px; color: var(--gold);
  font-family: var(--font-serif);
}
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

.hero-scroll {
  position: absolute; left: 50%; bottom: 34px; transform: translateX(-50%); z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 10px; color: var(--stone-light);
}
.scroll-line { width: 1px; height: 52px; background: var(--line-light); position: relative; overflow: hidden; }
.scroll-line::after {
  content: ""; position: absolute; left: 0; top: -50%; width: 100%; height: 50%;
  background: var(--gold); animation: scrollHint 2s var(--ease) infinite;
}
@keyframes scrollHint { from { top: -50%; } to { top: 110%; } }
.scroll-text { font-family: var(--font-en); font-size: 10px; letter-spacing: .4em; }

/* ---------- 关于我们 ---------- */
.about { background: var(--paper); }
.about-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 80px; align-items: start; }

.about-lead {
  font-family: var(--font-serif); font-size: 21px; line-height: 1.8; letter-spacing: .03em;
  color: var(--cream); margin-bottom: 24px; border-left: 3px solid var(--gold); padding-left: 20px;
}
.about-story > p { color: rgba(253,243,224,.8); margin-bottom: 18px; letter-spacing: .02em; }
.about-origin {
  margin-top: 34px; display: flex; gap: 18px; align-items: flex-start;
  background: rgba(253,243,224,.05); padding: 26px 28px; border: 1px solid var(--line);
  position: relative;
}
.about-origin::before { content: ""; position: absolute; inset: 6px; border: 1px solid var(--gold); opacity: .4; pointer-events: none; }
.origin-tag {
  writing-mode: vertical-rl; font-family: var(--font-serif); letter-spacing: .3em;
  color: var(--cinnabar); font-size: 15px; padding: 6px 2px; border-right: 1px solid var(--line); flex-shrink: 0;
}
.origin-text strong { font-family: var(--font-serif); font-size: 19px; letter-spacing: .06em; }
.origin-text p { color: var(--stone); font-size: 14.5px; margin-top: 6px; }

.about-capabilities { display: flex; flex-direction: column; gap: 22px; }
.cap-card {
  position: relative; padding: 30px 30px 30px 92px; background: rgba(253,243,224,.05);
  border: 1px solid var(--line); transition: all .4s var(--ease); overflow: hidden;
}
.cap-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--gold); transform: scaleY(0); transform-origin: top; transition: transform .45s var(--ease);
}
.cap-card:hover { transform: translateX(6px); box-shadow: var(--shadow); border-color: var(--gold); }
.cap-card:hover::before { transform: scaleY(1); }
.cap-num {
  position: absolute; left: 24px; top: 22px; font-family: var(--font-serif);
  font-size: 34px; color: rgba(253,243,224,.1); line-height: 1; -webkit-text-stroke: 1px var(--stone-light);
  transition: color .4s;
}
.cap-card:hover .cap-num { color: var(--cinnabar); -webkit-text-stroke: 0; }
.cap-icon { position: absolute; left: 26px; bottom: 26px; width: 30px; height: 30px; color: var(--cinnabar); opacity: .75; }
.cap-card h3 { font-family: var(--font-serif); font-size: 20px; letter-spacing: .08em; margin-bottom: 8px; }
.cap-card p { color: var(--stone); font-size: 14.5px; }

/* ---------- 产品中心 ---------- */
.products { background: var(--paper-deep); }
.products::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(1200px 400px at 20% 0%, rgba(195,161,95,.12), transparent 60%);
}

.tea-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.tea-card {
  position: relative; background: rgba(253,243,224,.05); padding: 42px 30px; text-align: center;
  border: 1px solid var(--line); overflow: hidden; transition: all .45s var(--ease);
}
.tea-card::after {
  content: ""; position: absolute; left: 50%; bottom: 0; width: 0; height: 3px;
  background: linear-gradient(90deg, var(--cinnabar), var(--gold)); transform: translateX(-50%); transition: width .45s var(--ease);
}
.tea-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.tea-card:hover::after { width: 100%; }
.tea-icon { width: 46px; height: 46px; margin: 0 auto 18px; color: var(--tea); transition: transform .5s var(--ease), color .4s; }
.tea-card:hover .tea-icon { transform: rotate(-14deg) scale(1.08); color: var(--cinnabar); }
.tea-card h3 { font-family: var(--font-serif); font-size: 22px; letter-spacing: .1em; }
.tea-card em { display: block; font-family: var(--font-en); font-size: 12px; letter-spacing: .26em; color: var(--gold); margin: 6px 0 10px; font-style: normal; }
.tea-card p { color: var(--stone); font-size: 14px; }

.star-head { display: flex; align-items: center; gap: 20px; margin: 84px 0 36px; }
.star-badge { font-family: var(--font-en); letter-spacing: .3em; font-size: 12px; color: var(--cinnabar); border: 1px solid var(--cinnabar); padding: 6px 14px; }
.star-head h3 { font-family: var(--font-serif); font-size: 30px; letter-spacing: .08em; }

.star-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.star-empty { text-align: center; color: var(--stone); font-size: 15px; letter-spacing: .1em; padding: 40px 0; border: 1px dashed var(--line); }
.star-card { background: rgba(246,238,218,.045); border: 1px solid var(--line); overflow: hidden; transition: all .45s var(--ease); position: relative; }
.star-card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0;
  background: linear-gradient(150deg, rgba(201,168,106,.08), transparent 45%);
  transition: opacity .45s var(--ease);
}
.star-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: rgba(201,168,106,.55); }
.star-card:hover::after { opacity: 1; }
.star-visual {
  position: relative; aspect-ratio: 3 / 4; display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.star-visual svg { width: 92px; height: 92px; color: var(--cream); z-index: 2; opacity: .95; }
.star-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 2; transition: transform .8s var(--ease); }
.star-visual.has-img::before { display: none; }
.star-visual.has-img .star-char { opacity: .9; mix-blend-mode: overlay; }
.star-visual::before {
  content: ""; position: absolute; inset: 0; transition: transform .6s var(--ease);
}
.star-card:hover .star-visual::before { transform: scale(1.08); }
.star-visual.v1 { background: linear-gradient(135deg, #c9972e, #7a4f12); }
.star-visual.v2 { background: linear-gradient(135deg, #7b211d, #3c1511); }
.star-visual.v3 { background: linear-gradient(135deg, #e8b84b, #8a5f1a); }
.star-visual.has-img { background: #33201a; }
.star-char {
  position: absolute; right: 14px; bottom: -18px; font-family: var(--font-serif);
  font-size: 130px; color: rgba(253,243,224,.12); line-height: 1; z-index: 1; pointer-events: none;
}
.star-body { padding: 26px 28px 30px; }
.star-tag { font-size: 12px; letter-spacing: .2em; color: var(--cinnabar); border-bottom: 1px solid var(--line); display: inline-block; padding-bottom: 4px; margin-bottom: 14px; }
.star-body h4 { font-family: var(--font-serif); font-size: 21px; letter-spacing: .05em; margin-bottom: 10px; }
.star-body p { color: var(--stone); font-size: 14px; margin-bottom: 16px; }
.star-note { font-family: var(--font-serif); font-size: 13px; letter-spacing: .3em; color: var(--gold); }
.star-body .star-foot { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line); }
.star-price { font-family: var(--font-serif); font-size: 22px; font-weight: 700; color: var(--gold-bright); letter-spacing: .02em; }
.star-price i { font-style: normal; font-size: 14px; margin-right: 3px; color: var(--gold); }

/* ---------- 溯源码查询 ---------- */
.trace { background: var(--paper); }
.trace-box { max-width: 780px; margin: 0 auto; }
.trace-search {
  display: flex; align-items: stretch; gap: 0; background: rgba(253,243,224,.05);
  border: 1px solid var(--gold); padding: 10px; position: relative;
  box-shadow: 0 24px 60px -32px rgba(0,0,0,.5);
}
.trace-search::before { content: ""; position: absolute; inset: 4px; border: 1px solid var(--line); pointer-events: none; }
.trace-search-icon { width: 26px; height: 26px; flex-shrink: 0; margin: auto 16px; color: var(--gold); }
.trace-search input {
  flex: 1; min-width: 0; background: transparent; border: 1px solid transparent; outline: none;
  color: var(--cream); font-size: 16px; letter-spacing: .06em; padding: 12px 4px;
}
.trace-search input::placeholder { color: rgba(253,243,224,.42); letter-spacing: .04em; }
.trace-search input.err-shake { border-color: #e07b5a; animation: traceShake .4s; }
@keyframes traceShake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }
.trace-btn { flex-shrink: 0; padding: 14px 46px; }
.trace-hint { margin-top: 18px; text-align: center; font-size: 13px; color: var(--stone); letter-spacing: .05em; }
.trace-sample {
  color: var(--gold-bright); border-bottom: 1px dashed var(--gold); padding: 0 2px;
  font-family: var(--font-en); letter-spacing: .08em; transition: color .3s, border-color .3s;
}
.trace-sample:hover { color: var(--cream); border-color: var(--cream); }

/* 查询结果 */
.trace-result { max-width: 780px; margin: 46px auto 0; }
.trace-card { border: 1px solid var(--line); background: rgba(253,243,224,.05); position: relative; overflow: hidden; animation: traceIn .6s var(--ease) both; }
.trace-card::before { content: ""; position: absolute; inset: 8px; border: 1px solid var(--line); pointer-events: none; }
.trace-card.genuine { border-color: var(--gold); }
.trace-card.suspect { border-color: #c95b3a; }
@keyframes traceIn { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }

.trace-head { display: flex; align-items: center; gap: 24px; padding: 30px 34px; border-bottom: 1px solid var(--line); }
.trace-img { width: 138px; height: 184px; flex-shrink: 0; border: 1px solid var(--gold); padding: 3px; position: relative; background: rgba(253,243,224,.05); }
.trace-img::after { content: ""; position: absolute; inset: 5px; border: 1px solid var(--line); pointer-events: none; }
.trace-img img { width: 100%; height: 100%; object-fit: cover; border-radius: 2px; }
.trace-stamp {
  width: 92px; height: 92px; flex-shrink: 0; border-radius: 50%; display: flex; flex-direction: column;
  align-items: center; justify-content: center; border: 2px solid var(--gold); color: var(--gold);
  position: relative;
}
.trace-stamp::after { content: ""; position: absolute; inset: 5px; border: 1px solid var(--gold); border-radius: 50%; opacity: .5; }
.trace-stamp b { font-family: var(--font-serif); font-size: 30px; letter-spacing: .12em; line-height: 1; }
.trace-stamp em { font-style: normal; font-size: 9px; letter-spacing: .3em; margin-top: 6px; }
.trace-head-info h3 { font-family: var(--font-serif); font-size: 26px; letter-spacing: .06em; color: var(--cream); }
.trace-head-info p { color: var(--stone); font-size: 13.5px; margin-top: 8px; letter-spacing: .04em; }
.trace-price-line { display: flex; align-items: baseline; gap: 10px; margin-top: 12px; }
.trace-price { font-family: var(--font-serif); font-size: 30px; font-weight: 700; color: var(--gold-bright); letter-spacing: .02em; line-height: 1; }
.trace-price i { font-style: normal; font-size: 16px; margin-right: 2px; color: var(--gold); }
.trace-price-unit { font-style: normal; font-size: 11px; letter-spacing: .22em; color: var(--stone); }
.trace-badge { margin-left: auto; flex-shrink: 0; font-size: 12px; letter-spacing: .25em; padding: 6px 14px; border: 1px solid var(--gold); color: var(--gold); }
.trace-card.suspect .trace-stamp { border-color: #e07b5a; color: #f0a88a; }
.trace-card.suspect .trace-stamp::after { border-color: #e07b5a; }
.trace-card.suspect .trace-badge { border-color: #e07b5a; color: #f0a88a; }

.trace-table { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; padding: 8px 34px 26px; }
.trace-row { display: flex; gap: 18px; padding: 15px 4px; border-bottom: 1px dashed rgba(253,243,224,.12); }
.trace-row:nth-last-child(-n+2) { border-bottom: none; }
.trace-row dt { flex-shrink: 0; width: 96px; color: var(--gold); font-size: 13px; letter-spacing: .2em; padding-top: 2px; }
.trace-row dd { color: rgba(253,243,224,.88); font-size: 14px; letter-spacing: .02em; margin: 0; }
.trace-note { padding: 0 34px 30px; color: var(--stone); font-size: 12.5px; letter-spacing: .05em; }
.trace-note i { color: var(--gold); font-style: normal; }

.trace-suspect-body { padding: 44px 34px; text-align: center; }
.trace-suspect-body h3 { font-family: var(--font-serif); font-size: 28px; letter-spacing: .1em; color: #f0a88a; }
.trace-suspect-body p { color: var(--stone); font-size: 14.5px; margin-top: 14px; letter-spacing: .05em; max-width: 520px; margin-left: auto; margin-right: auto; }

/* ---------- 茶文化 ---------- */
.culture {
  position: relative; background: var(--ink); color: var(--paper-light);
  padding: 140px 0; overflow: hidden;
}
.culture-bg { position: absolute; inset: 0; pointer-events: none; }
.culture-char {
  position: absolute; right: -40px; top: 8%; font-family: var(--font-serif);
  font-size: clamp(240px, 34vw, 520px); line-height: 1; color: rgba(246,240,226,.035);
  user-select: none;
}
.culture-char-2 {
  position: absolute; left: -60px; bottom: -6%; font-family: var(--font-serif);
  font-size: clamp(200px, 28vw, 420px); line-height: 1; color: rgba(195,161,95,.05); user-select: none;
}
.culture-inner { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.culture-en { font-family: var(--font-en); letter-spacing: .42em; font-size: 13px; color: var(--gold); }
.culture-left h2 {
  font-family: var(--font-serif); font-size: clamp(36px, 5vw, 56px); line-height: 1.4;
  letter-spacing: .1em; margin: 22px 0 26px;
}
.culture-left > p { color: rgba(246,240,226,.7); max-width: 440px; font-size: 15.5px; }
.culture-bowl { width: 120px; height: 112px; color: var(--gold); margin-top: 36px; opacity: .9; animation: floaty 6s ease-in-out infinite; }

.culture-right { display: flex; flex-direction: column; gap: 18px; }
.virtue {
  display: flex; gap: 24px; align-items: center; padding: 26px 28px;
  background: rgba(246,240,226,.03); border: 1px solid var(--line-light); transition: all .4s var(--ease);
}
.virtue:hover { background: rgba(246,240,226,.06); border-color: var(--gold); transform: translateX(8px); }
.virtue-char {
  width: 68px; height: 68px; flex-shrink: 0; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif); font-size: 34px; color: var(--gold);
  border: 1px solid var(--gold); position: relative; transition: all .4s var(--ease);
}
.virtue:hover .virtue-char { background: var(--gold); color: var(--ink-3); border-color: var(--gold); }
.virtue-body h3 { font-family: var(--font-serif); font-size: 19px; letter-spacing: .08em; margin-bottom: 6px; }
.virtue-body p { color: rgba(246,240,226,.62); font-size: 14px; }

/* ---------- 招商加盟 ---------- */
.franchise { background: var(--paper); }
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 90px;
}
.stat { text-align: center; padding: 38px 10px; background: rgba(253,243,224,.05); border: 1px solid var(--line); transition: all .4s var(--ease); position: relative; }
.stat::after { content: ""; position: absolute; inset: 8px; border: 1px solid var(--gold); opacity: 0; transition: opacity .4s; pointer-events: none; }
.stat:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.stat:hover::after { opacity: .45; }
.stat-num { font-family: var(--font-serif); font-size: clamp(40px, 5vw, 60px); font-weight: 700; color: var(--cinnabar); line-height: 1; display: flex; align-items: baseline; justify-content: center; }
.stat-num i { font-style: normal; }
.stat-num b { font-size: .5em; color: var(--gold); font-weight: 700; margin-left: 4px; }
.stat-label { display: block; margin-top: 14px; color: var(--stone); letter-spacing: .18em; font-size: 14px; }

.store-head, .process-head { text-align: center; margin: 0 0 40px; }
.store-head h3, .process-head h3 {
  font-family: var(--font-serif); font-size: 30px; letter-spacing: .08em; display: inline-block; position: relative;
}
.store-head h3::before, .store-head h3::after, .process-head h3::before, .process-head h3::after {
  content: ""; position: absolute; top: 50%; width: 44px; height: 1px; background: var(--line);
}
.store-head h3::before, .process-head h3::before { right: 100%; margin-right: 18px; }
.store-head h3::after, .process-head h3::after { left: 100%; margin-left: 18px; }

.store-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-bottom: 96px; }
.store-card { background: rgba(253,243,224,.05); border: 1px solid var(--line); padding: 30px 26px; transition: all .4s var(--ease); position: relative; }
.store-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: var(--gold); }
.store-card.featured { border-color: var(--gold); background: linear-gradient(180deg, rgba(201,168,106,.13), rgba(246,238,218,.04)); }
.store-card.featured::before { content: "推荐"; position: absolute; top: -13px; left: 24px; background: var(--gold); color: var(--ink-3); font-size: 12px; letter-spacing: .2em; padding: 3px 12px; }
.store-top { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1px solid var(--line); padding-bottom: 16px; margin-bottom: 16px; }
.store-type { font-family: var(--font-serif); font-size: 22px; letter-spacing: .08em; }
.store-area { font-family: var(--font-en); font-size: 13px; color: var(--gold); letter-spacing: .1em; }
.store-pos { color: var(--stone); font-size: 13.5px; margin-bottom: 18px; }
.store-invest { display: flex; flex-direction: column; gap: 4px; padding: 14px 0; margin-bottom: 16px; }
.store-invest span { font-size: 12px; color: var(--stone); letter-spacing: .2em; }
.store-invest strong { font-family: var(--font-serif); font-size: 24px; color: var(--cinnabar); }
.store-list li { position: relative; padding-left: 20px; font-size: 14px; color: rgba(253,243,224,.78); margin-bottom: 8px; }
.store-list li::before { content: ""; position: absolute; left: 2px; top: 8px; width: 6px; height: 6px; background: var(--gold); transform: rotate(45deg); }

.process { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; counter-reset: none; }
.process li { text-align: center; padding: 30px 14px; background: rgba(253,243,224,.05); border: 1px solid var(--line); position: relative; transition: all .4s var(--ease); }
.process li:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.process li:not(:last-child)::after {
  content: "→"; position: absolute; right: -16px; top: 42%; color: var(--gold); font-size: 18px; z-index: 1;
}
.step-num { display: block; font-family: var(--font-serif); font-size: 30px; color: var(--cinnabar); margin-bottom: 10px; }
.process h4 { font-family: var(--font-serif); font-size: 17px; letter-spacing: .1em; margin-bottom: 8px; }
.process p { color: var(--stone); font-size: 12.5px; }

/* ---------- 新闻中心 ---------- */
.news { background: var(--paper-deep); }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.news-card {
  display: flex; gap: 28px; background: rgba(253,243,224,.05); padding: 30px; border: 1px solid var(--line);
  transition: all .4s var(--ease);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--gold); }
.news-date {
  flex-shrink: 0; text-align: center; width: 74px; align-self: flex-start;
  border: 1px solid var(--gold); padding: 12px 8px; position: relative;
}
.news-date span { display: block; font-family: var(--font-serif); font-size: 30px; color: var(--cinnabar); line-height: 1; }
.news-date em { display: block; font-style: normal; font-family: var(--font-en); font-size: 10.5px; letter-spacing: .08em; color: var(--stone); margin-top: 6px; }
.news-cat { font-size: 12px; color: var(--cinnabar); letter-spacing: .2em; }
.news-body h3 { font-family: var(--font-serif); font-size: 20px; letter-spacing: .03em; margin: 10px 0 10px; line-height: 1.5; transition: color .3s; }
.news-card:hover .news-body h3 { color: var(--cinnabar); }
.news-body p { color: var(--stone); font-size: 14px; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-more { font-size: 13px; color: var(--gold); letter-spacing: .1em; }

/* ---------- 联系我们 ---------- */
.contact { background: linear-gradient(160deg, #200a08, #4a1c15); color: var(--cream); padding: 120px 0; position: relative; overflow: hidden; }
.contact::before { content: ""; position: absolute; right: -140px; bottom: -140px; width: 480px; height: 480px; border-radius: 50%; background: radial-gradient(circle, rgba(195,161,95,.12), transparent 70%); }
.contact-inner { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; align-items: start; position: relative; }
.contact-info, .contact-form-wrap { min-width: 0; }
.contact-info h2 { font-family: var(--font-serif); font-size: clamp(32px, 4.5vw, 46px); letter-spacing: .06em; margin: 16px 0 0; }
.contact-info h2 span { color: var(--gold); }
.contact-desc { color: rgba(246,240,226,.65); margin-top: 22px; max-width: 400px; }
.contact-list { margin-top: 40px; display: flex; flex-direction: column; gap: 22px; }
.contact-list li { display: flex; gap: 18px; align-items: flex-start; }
.c-label {
  flex-shrink: 0; width: 72px; font-size: 13px; letter-spacing: .2em; color: var(--gold);
  border-right: 1px solid var(--line-light); padding-right: 18px; padding-top: 3px;
}
.contact-list p { font-size: 15px; color: rgba(246,240,226,.85); white-space: nowrap; }
.contact-seal { width: 112px; height: 112px; margin-top: 48px; opacity: .92; object-fit: contain; animation: floaty 6s ease-in-out infinite; }

.contact-form-wrap {
  background: rgba(253,243,224,.05); border: 1px solid var(--line-light);
  padding: 44px 42px; position: relative; backdrop-filter: blur(4px);
}
.contact-form-wrap::before { content: ""; position: absolute; inset: 8px; border: 1px solid var(--gold); opacity: .22; pointer-events: none; }
.contact-form-wrap h3 { font-family: var(--font-serif); font-size: 26px; letter-spacing: .1em; }
.form-sub { color: rgba(246,240,226,.55); font-size: 13.5px; margin: 8px 0 30px; }

.join-form { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 18px; }
/* hidden 属性必须覆盖 display:grid，否则提交成功后表单仍可见可重复提交 */
.join-form[hidden] { display: none !important; }
.field { display: flex; flex-direction: column; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 13px; letter-spacing: .12em; margin-bottom: 9px; color: rgba(246,240,226,.75); }
.field label i { color: var(--cinnabar); font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; background: rgba(253,243,224,.07); border: 1px solid var(--line-light); padding: 12px 15px;
  color: var(--cream); font-size: 14.5px; transition: border-color .3s, background .3s; outline: none;
}
.field input::placeholder, .field textarea::placeholder { color: rgba(246,240,226,.3); }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--gold); background: rgba(246,240,226,.08); }
.field select { appearance: none; -webkit-appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23e8b84b' stroke-width='1.6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 15px center; }
.field select option { color: var(--ink); background: var(--paper-light); }
.field textarea { resize: vertical; min-height: 80px; }
.field .err { font-size: 12px; color: #f6c8a6; margin-top: 6px; min-height: 0; }
.field.invalid input, .field.invalid textarea { border-color: var(--cinnabar); }

.field-captcha { grid-column: 1 / -1; }
.captcha-row { display: flex; gap: 12px; }
.captcha-row input { flex: 1; min-width: 0; }
.captcha-box {
  width: 128px; height: 46px; flex-shrink: 0; display: flex; align-items: center; justify-content: center;
  background: var(--cream); color: var(--ink-3); font-family: var(--font-serif);
  font-size: 22px; letter-spacing: .3em; font-weight: 700; cursor: pointer; user-select: none;
  border: 1px dashed var(--gold); position: relative; overflow: hidden;
}
.captcha-box::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(120deg, transparent 30%, rgba(232,184,75,.14) 50%, transparent 70%); background-size: 200% 100%; animation: captchaShine 4s linear infinite; }
@keyframes captchaShine { from { background-position: 200% 0; } to { background-position: -200% 0; } }

.form-tip { grid-column: 1 / -1; font-size: 12px; color: rgba(246,240,226,.56); text-align: center; margin-top: 4px; }

.form-success { text-align: center; padding: 30px 10px; }
.success-icon { width: 52px; height: 52px; color: var(--gold); margin: 0 auto 18px; }
.form-success h4 { font-family: var(--font-serif); font-size: 24px; letter-spacing: .12em; margin-bottom: 10px; }
.form-success p { color: rgba(246,240,226,.7); font-size: 14.5px; }

/* ---------- 页脚 ---------- */
.site-footer { background: #170605; color: rgba(246,238,218,.75); }
.footer-inner { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 50px; padding: 70px 0 54px; }
.footer-brand .brand-seal { width: 76px; height: 76px; margin-bottom: 16px; object-fit: contain; }
.footer-brand .brand-text strong { font-family: var(--font-logo); font-weight: 700; color: var(--cream); font-size: 21px; letter-spacing: .1em; white-space: nowrap; }
.footer-brand .brand-text em { font-size: 8px; letter-spacing: .12em; line-height: 1.4; white-space: nowrap; }
.footer-brand p { margin-top: 14px; font-family: var(--font-serif); letter-spacing: .18em; color: var(--gold); font-size: 14px; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 30px; align-content: start; }
.footer-links a { font-size: 14px; letter-spacing: .08em; opacity: .7; transition: all .3s; }
.footer-links a:hover { color: var(--gold-bright); opacity: 1; padding-left: 6px; }
.footer-contact p { font-size: 13.5px; opacity: .65; margin-bottom: 12px; letter-spacing: .03em; white-space: nowrap; }
.footer-bottom { border-top: 1px solid rgba(246,240,226,.1); padding: 22px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 12.5px; opacity: .55; }

/* 回到顶部 */
.to-top {
  position: fixed; right: 28px; bottom: 28px; z-index: 900; width: 46px; height: 46px;
  border: 1px solid var(--gold); color: var(--gold); background: rgba(29,24,19,.8);
  font-size: 20px; opacity: 0; pointer-events: none; transform: translateY(12px); transition: all .35s var(--ease);
}
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { background: var(--gold); border-color: var(--gold); color: var(--ink-3); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .section { padding: 90px 0; }
  .about-grid { grid-template-columns: 1fr; gap: 56px; }
  .culture-inner { grid-template-columns: 1fr; gap: 60px; }
  .contact-inner { grid-template-columns: 1fr; gap: 60px; }
  .tea-grid { grid-template-columns: repeat(3, 1fr); }
  .star-grid { grid-template-columns: repeat(3, 1fr); }
  .store-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); gap: 22px 16px; }
  .process li:not(:last-child)::after { display: none; }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed; inset: 0; background: rgba(20,7,5,.97); flex-direction: column;
    justify-content: center; gap: 30px; z-index: 999;
    opacity: 0; pointer-events: none; transition: opacity .4s var(--ease);
  }
  .main-nav a { font-size: 20px; letter-spacing: .2em; }
  .nav-open .main-nav { opacity: 1; pointer-events: auto; }
  .nav-cta { display: none; }
  .burger { display: flex; z-index: 1001; position: relative; }
  .nav-open .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-open .burger span:nth-child(2) { opacity: 0; }
  .nav-open .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .tea-grid { grid-template-columns: repeat(2, 1fr); }
  .star-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .store-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; gap: 36px; padding: 50px 0 40px; }
  .hero-side { display: none; }
  .join-form { grid-template-columns: 1fr; }
  .field-full, .field-captcha { grid-column: auto; }
  .store-head h3::before, .store-head h3::after, .process-head h3::before, .process-head h3::after { display: none; }

  /* 溯源码查询 - 移动端 */
  .trace-search { flex-wrap: wrap; }
  .trace-btn { width: 100%; }
  .trace-table { grid-template-columns: 1fr; }
  .trace-row:nth-last-child(-n+2) { border-bottom: 1px dashed rgba(253,243,224,.12); }
  .trace-row:last-child { border-bottom: none; }
  .trace-head { flex-wrap: wrap; gap: 16px; padding: 22px 20px; }
  .trace-badge { margin-left: 0; }
  .trace-search-icon { display: none; }
  .trace-search input { padding: 12px 14px; }
  .trace-img { width: 105px; height: 140px; }
  .trace-table { padding: 4px 20px 18px; }
}

@media (max-width: 480px) {
  .tea-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 14px; }
  .process { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 34px 24px; }
  .hero-cta .btn { flex: 1; text-align: center; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}

/* =========================================================
   2026-09-04 UI 精致化增强
   ========================================================= */

/* ---------- 返回顶部：圆形印章式 ---------- */
.to-top {
  border-radius: 50%;
  box-shadow: 0 12px 30px -14px rgba(0,0,0,.55);
}
.to-top:hover { transform: translateY(-3px); }

/* ---------- 按钮按压反馈 ---------- */
.btn:active { transform: translateY(0) scale(.97); }

/* ---------- 无 JS 提示 ---------- */
.noscript-note {
  max-width: 640px; margin: 0 auto; padding: 20px 26px; text-align: center;
  border: 1px dashed var(--gold); color: var(--cream);
  background: rgba(253,243,224,.06); font-size: 14.5px; letter-spacing: .08em;
}

/* ---------- 键盘焦点可见性（无障碍） ---------- */
a:focus-visible, button:focus-visible, .btn:focus-visible,
input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
}

/* ---------- 首屏金色茶韵粒子 ---------- */
.hero-grains {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 1;
}
.hero-grain {
  position: absolute; top: -4%;
  width: 5px; height: 5px; border-radius: 50%;
  background: radial-gradient(circle, rgba(231,205,148,.95), rgba(201,168,106,0) 72%);
  opacity: 0;
  animation-name: grainFall;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  will-change: transform, opacity;
}
@keyframes grainFall {
  0%   { transform: translate3d(0, -6vh, 0) scale(.55); opacity: 0; }
  8%   { opacity: .8; }
  90%  { opacity: .8; }
  100% { transform: translate3d(var(--dx, 24px), 106vh, 0) scale(1.05); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-grains { display: none; }
}

/* ---------- 年度单品：图片 hover 微缩放 ---------- */
.star-card:hover .star-visual img { transform: scale(1.07); }
.star-card:hover .star-visual svg { transform: rotate(-6deg) scale(1.08); }
.star-visual svg { transition: transform .8s var(--ease); }

/* ---------- 产品品类卡：金角装饰 ---------- */
.tea-card::before {
  content: ""; position: absolute; top: 12px; left: 12px; width: 16px; height: 16px;
  border-top: 1px solid var(--gold); border-left: 1px solid var(--gold);
  opacity: 0; transform: translate(-5px, -5px); transition: all .45s var(--ease);
  z-index: 1; pointer-events: none;
}
.tea-card:hover::before { opacity: 1; transform: none; }

/* ---------- 店型卡片：描金内框增强 ---------- */
.store-card::after {
  content: ""; position: absolute; inset: 8px; border: 1px solid var(--gold);
  opacity: 0; transition: opacity .4s var(--ease); pointer-events: none;
}
.store-card:hover::after { opacity: .3; }

/* ---------- 溯源搜索框：聚焦光晕 ---------- */
.trace-search:focus-within {
  border-color: var(--gold-bright);
  box-shadow: 0 24px 60px -32px rgba(0,0,0,.5), 0 0 0 3px rgba(201,168,106,.18);
}

/* ---------- 导航菜单项：底部金线细化 ---------- */
.main-nav a::after { height: 2px; }

/* ---------- 区块标题微增强 ---------- */
.head-title span::after { bottom: -6px; }

/* =========================================================
   2026-09-04 移动端精修（窄屏协调 + 全屏菜单质感）
   ========================================================= */
@media (max-width: 768px) {
  /* 顶部品牌区收紧，避免 logo 过大头重脚轻 */
  .site-header { padding: 14px 0; }
  .site-header.scrolled { padding: 8px 0; }
  /* 移动端表单输入 ≥16px 防 iOS 聚焦缩放；关闭全屏噪点纹理（性能） */
  .field input, .field select, .field textarea { font-size: 16px; }
  body::after { display: none; }
  .nav-inner { gap: 14px; }
  .brand { gap: 11px; }
  .brand-seal { width: 54px; height: 54px; }
  .brand-text strong { font-size: 25px; letter-spacing: .1em; }
  .brand-text em { font-size: 9px; letter-spacing: .22em; margin-top: 2px; }
  /* 汉堡按钮触控区不小于 44px */
  .burger { padding: 10px; gap: 5px; }
  .burger span { width: 24px; }

  /* 区块与标题间距收紧 */
  .section { padding: 70px 0; }
  .section-head { margin-bottom: 50px; }
  .head-line span { width: 130px; }
  .head-sub { font-size: 14px; line-height: 1.8; }

  /* 首屏 */
  .hero-content { padding: 108px 0 78px; }
  .hero-eyebrow { letter-spacing: .32em; font-size: 11px; margin-bottom: 22px; }
  .hero-title { letter-spacing: .08em; }
  .hero-sub { letter-spacing: .1em; margin-bottom: 36px; }
  .hero-cta { gap: 14px; }

  /* 联系信息：标签单行不换行、长内容可换行，避免撑破页面 */
  .contact-list li { gap: 14px; align-items: baseline; }
  .c-label {
    width: auto; min-width: 68px; padding-right: 14px;
    letter-spacing: .1em; white-space: nowrap;
  }
  .contact-list p { white-space: normal; overflow-wrap: break-word; word-break: break-word; }
  /* 表单网格允许收缩，控件填满列宽，不再撑破窄屏 */
  .join-form, .field { min-width: 0; }
  /* 页脚公司名与联系方式允许换行，防止窄屏横向溢出 */
  .footer-brand .brand-text strong,
  .footer-brand .brand-text em { white-space: normal; }
  .footer-contact p { white-space: normal; }

  /* 全屏菜单：居中无线条、文字不换行、逐项淡入 */
  .main-nav { gap: 10px; }
  .main-nav a {
    width: auto; min-width: 172px; text-align: center; padding: 12px 28px;
    font-size: 20px; letter-spacing: .2em; white-space: nowrap;
    opacity: 0; transform: translateY(14px);
  }
  .main-nav a::after { display: none; }
  .nav-open .main-nav a { animation: mobileNavIn .5s var(--ease) forwards; }
  .nav-open .main-nav a:nth-child(1) { animation-delay: .06s; }
  .nav-open .main-nav a:nth-child(2) { animation-delay: .12s; }
  .nav-open .main-nav a:nth-child(3) { animation-delay: .18s; }
  .nav-open .main-nav a:nth-child(4) { animation-delay: .24s; }
  .nav-open .main-nav a:nth-child(5) { animation-delay: .30s; }
  .nav-open .main-nav a:nth-child(6) { animation-delay: .36s; }
  @keyframes mobileNavIn { to { opacity: 1; transform: none; } }
}

@media (max-width: 480px) {
  .brand-seal { width: 46px; height: 46px; }
  .brand-text strong { font-size: 22px; }
  .brand-text em { letter-spacing: .18em; }
  .section { padding: 58px 0; }
  .section-head { margin-bottom: 42px; }
  .hero-content { padding: 96px 0 68px; }
  .hero-title { letter-spacing: .05em; }
  .btn { padding: 14px 30px; }
  .main-nav a { min-width: 156px; font-size: 18px; padding: 11px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  .nav-open .main-nav a { animation: none; opacity: 1; transform: none; }
}