/* ============================================================
   聚商岛官网 V3.0 全站设计系统
   视觉规范：深墨兰 #0B1730 · 辅助墨兰 #111F3B · 香槟 #E5D5BF
            鎏金 #C8A66A · 米白 #F7F3EC · 正文 #172033
   ============================================================ */

:root {
  --navy: #0B1730;
  --navy-2: #111F3B;
  --navy-3: #16264a;
  --champagne: #E5D5BF;
  --gold: #C8A66A;
  --gold-2: #E2C790;
  --gold-3: #F0DFBE;
  --cream: #F7F3EC;
  --cream-2: #FBF8F2;
  --ink: #172033;
  --muted: #5A6478;
  --muted-l: #A8B0C0;
  --line-d: rgba(200, 166, 106, .22);
  --line-l: rgba(23, 32, 51, .10);
  --radius: 14px;
  --radius-lg: 20px;
  --max: 1280px;
  --shadow-l: 0 18px 50px rgba(23, 32, 51, .09);
  --shadow-d: 0 24px 70px rgba(0, 0, 0, .42);
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.75;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font: inherit; border: 0; background: none; cursor: pointer; }

.container { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
@media (max-width: 768px) { .container { width: calc(100% - 32px); } }

/* ---------- 通用文字 ---------- */
.eyebrow {
  font-size: 12px; letter-spacing: .32em; text-transform: uppercase;
  color: var(--gold); font-weight: 600;
}
.sec-title {
  font-family: var(--serif);
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.3; color: var(--ink); font-weight: 700;
  letter-spacing: .02em;
}
.sec-title.on-dark { color: #fff; }
.sec-sub { color: var(--muted); font-size: 15.5px; max-width: 640px; margin-top: 14px; }
.sec-sub.on-dark { color: var(--muted-l); }
.sec-head { margin-bottom: 44px; }
.sec-head.center { text-align: center; }
.sec-head.center .sec-sub { margin-left: auto; margin-right: auto; }

/* 深色区块公共 */
.dark { background: var(--navy); color: #E8ECF4; position: relative; overflow: hidden; }
.dark .sec-title { color: #fff; }
.dark .sec-sub { color: var(--muted-l); }
.gold-text {
  background: linear-gradient(100deg, var(--gold-2), var(--gold-3) 40%, var(--gold) 70%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  min-height: 48px; padding: 0 28px; border-radius: 12px;
  font-size: 15px; font-weight: 600; letter-spacing: .04em;
  transition: transform .22s, box-shadow .22s, background .22s, border-color .22s;
  white-space: nowrap;
}
.btn-gold {
  background: linear-gradient(135deg, #D9BC85, var(--gold) 55%, #B08D52);
  color: #22190A;
  box-shadow: 0 10px 30px rgba(200, 166, 106, .34);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(200, 166, 106, .45); }
.btn-ghost-d { border: 1px solid rgba(229, 213, 191, .38); color: var(--champagne); }
.btn-ghost-d:hover { border-color: var(--gold); color: var(--gold-2); background: rgba(200, 166, 106, .07); }
.btn-ghost-l { border: 1px solid rgba(23, 32, 51, .25); color: var(--ink); }
.btn-ghost-l:hover { border-color: var(--gold); color: #8a6a33; background: rgba(200, 166, 106, .08); }
.btn-navy { background: var(--navy-2); color: #fff; }
.btn-navy:hover { background: var(--navy-3); transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ============================================================
   顶部导航
   ============================================================ */
.topbar {
  background: #081021; color: #8E9AB2; font-size: 12px;
  border-bottom: 1px solid rgba(200, 166, 106, .12);
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; height: 36px; }
.topbar a:hover { color: var(--gold-2); }
.topbar .hotline { color: var(--champagne); letter-spacing: .05em; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11, 23, 48, .92);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(200, 166, 106, .16);
}
.nav { display: flex; align-items: center; height: 76px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand-mark {
  width: 46px; height: 46px; border-radius: 13px; flex: none;
  display: grid; place-items: center;
  background: linear-gradient(150deg, #16294e, #0d1a36);
  border: 1px solid rgba(200, 166, 106, .5);
  box-shadow: inset 0 1px 0 rgba(240, 223, 190, .25), 0 8px 22px rgba(0, 0, 0, .35);
}
.brand-mark svg { width: 28px; height: 28px; }
.brand-name { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name strong { font-family: var(--serif); font-size: 21px; color: #fff; letter-spacing: .14em; }
.brand-name small { font-size: 9.5px; letter-spacing: .24em; color: var(--gold); margin-top: 3px; }

.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links > a {
  position: relative; padding: 8px 13px; font-size: 14.5px;
  color: #C4CDDD; transition: color .2s;
}
.nav-links > a:hover { color: #fff; }
.nav-links > a.active { color: var(--gold-2); }
.nav-links > a.active::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: 1px;
  height: 2px; background: linear-gradient(90deg, var(--gold-2), var(--gold));
  border-radius: 2px;
}
.nav-cta { display: flex; gap: 12px; flex: none; align-items: center; }
.nav-cta .btn { min-height: 42px; padding: 0 18px; font-size: 13.5px; }
.nav-toggle { display: none; width: 44px; height: 44px; color: #fff; font-size: 22px; }

@media (max-width: 1180px) {
  .nav-links, .nav-cta .btn-ghost-d { display: none; }
  .nav-toggle { display: grid; place-items: center; margin-left: auto; }
  .nav-cta { margin-left: 0; }
}
.mobile-menu {
  display: none; background: var(--navy); border-bottom: 1px solid rgba(200, 166, 106, .18);
  padding: 10px 0 22px;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block; padding: 13px 24px; color: #D5DCEA; font-size: 15.5px;
  border-bottom: 1px solid rgba(255, 255, 255, .05);
}
.mobile-menu a:active { color: var(--gold-2); }
.mobile-menu .mm-cta { padding: 18px 24px 4px; display: grid; gap: 10px; }

/* ============================================================
   S01 HERO
   ============================================================ */
.hero {
  position: relative; color: #E9EDF5; overflow: hidden;
  background:
    radial-gradient(1100px 560px at 78% 12%, rgba(38, 70, 128, .5), transparent 62%),
    radial-gradient(800px 420px at 12% 88%, rgba(200, 166, 106, .08), transparent 60%),
    linear-gradient(178deg, #0B1730 0%, #0E1C3A 58%, #0B1730 100%);
  padding: 84px 0 0;
}
.hero .skyline {
  position: absolute; left: 0; right: 0; bottom: -2px; width: 100%; height: 170px;
  object-fit: cover; object-position: 50% 30%; opacity: .85; pointer-events: none;
  mask-image: linear-gradient(180deg, transparent 0, #000 26%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 26%);
}
.hero-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 560px 1fr; gap: 40px;
  align-items: center; padding-bottom: 34px;
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.32; font-weight: 800; color: #fff;
  letter-spacing: .015em; margin: 22px 0 6px;
}
.hero-title .gold-text { display: inline-block; }
.hero-en {
  font-size: 11.5px; letter-spacing: .18em; color: #7E8AA6;
  text-transform: uppercase; line-height: 1.9; margin-bottom: 18px; max-width: 460px;
}
.hero-desc { color: #B9C2D6; font-size: 15.5px; max-width: 470px; margin-bottom: 30px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; display: grid; place-items: center; }
.hero-visual .globe {
  width: min(100%, 660px); filter: drop-shadow(0 30px 60px rgba(0, 0, 0, .5));
  animation: floatY 7s ease-in-out infinite;
}
.hero-slogan {
  position: absolute; bottom: 6px; left: 50%; transform: translateX(-50%);
  font-family: var(--serif); text-align: center; white-space: nowrap;
  color: var(--gold-3); font-size: 15px; letter-spacing: .22em;
  text-shadow: 0 2px 18px rgba(0, 0, 0, .6);
}
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

/* 数据栏 */
.databar { position: relative; z-index: 3; border-top: 1px solid rgba(200, 166, 106, .16); }
.databar-grid {
  display: grid; grid-template-columns: repeat(5, 1fr) auto; gap: 8px;
  align-items: center; padding: 26px 0 30px;
}
.stat { text-align: center; padding: 0 10px; }
.stat + .stat { border-left: 1px solid rgba(255, 255, 255, .09); }
.stat b {
  display: block; font-family: var(--serif); font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 800; color: var(--gold-2); letter-spacing: .02em;
}
.stat b .unit { font-size: .55em; margin-left: 2px; color: var(--gold); }
.stat span { display: block; margin-top: 5px; font-size: 13px; color: #97A2B8; letter-spacing: .1em; }
.databar-video {
  display: flex; align-items: center; gap: 14px; padding-left: 26px;
  border-left: 1px solid rgba(255, 255, 255, .12);
}
.video-btn {
  width: 58px; height: 58px; border-radius: 50%; flex: none;
  border: 1px solid rgba(229, 213, 191, .55); display: grid; place-items: center;
  transition: border-color .25s, transform .25s, background .25s;
}
.video-btn:hover { border-color: var(--gold); background: rgba(200, 166, 106, .12); transform: scale(1.06); }
.video-btn svg { width: 20px; height: 20px; fill: var(--champagne); margin-left: 3px; }
.video-info b { display: block; color: #E7EBF4; font-size: 14.5px; font-weight: 600; }
.video-info span { display: block; color: #8B97AF; font-size: 12.5px; margin-top: 2px; }

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 20px; }
  .hero-visual .globe { width: min(100%, 520px); }
  .hero-slogan { position: static; transform: none; margin-top: 10px; }
}
@media (max-width: 768px) {
  .hero { padding-top: 48px; }
  .hero-desc { margin-bottom: 24px; }
  .databar-grid { grid-template-columns: repeat(2, 1fr); row-gap: 22px; }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(5) { grid-column: span 2; border-left: 0; }
  .databar-video { grid-column: span 2; border-left: 0; padding-left: 0; justify-content: center; margin-top: 6px; }
}

/* ============================================================
   S02 客户行为变迁
   ============================================================ */
.change-sec { padding: 96px 0; background: var(--cream); position: relative; }
.change-grid { display: grid; grid-template-columns: 300px 1fr 300px; gap: 44px; align-items: start; }
.change-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.change-card {
  background: #fff; border: 1px solid var(--line-l); border-radius: var(--radius-lg);
  padding: 30px 26px 28px; position: relative; box-shadow: var(--shadow-l);
  transition: transform .25s, box-shadow .25s;
}
.change-card:hover { transform: translateY(-4px); box-shadow: 0 26px 60px rgba(23, 32, 51, .13); }
.change-card .tag {
  display: inline-block; font-family: var(--serif); font-size: 13px; letter-spacing: .3em;
  color: var(--gold); border-bottom: 1px solid var(--line-d); padding-bottom: 8px; margin-bottom: 18px;
}
.change-card.now { background: var(--navy); border-color: transparent; }
.change-card.now .tag { color: var(--gold-2); border-color: rgba(200, 166, 106, .4); }
.change-card.now .cs-item { color: #D9E0EE; border-color: rgba(255, 255, 255, .12); }
.change-card.now .cs-icon { background: rgba(200, 166, 106, .14); color: var(--gold-2); }
.cs-icon {
  width: 46px; height: 46px; border-radius: 12px; margin-bottom: 18px;
  display: grid; place-items: center; background: rgba(200, 166, 106, .13); color: #9A7B41;
}
.cs-icon svg { width: 24px; height: 24px; }
.cs-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 0; font-size: 14.5px; color: var(--ink);
  border-bottom: 1px dashed var(--line-l);
}
.cs-item:last-child { border-bottom: 0; }
.cs-item .arr { color: var(--gold); font-size: 12px; }
.change-quote { background: transparent; }
.quote-mark { font-family: var(--serif); font-size: 84px; line-height: .6; color: var(--gold); opacity: .45; display: block; }
.quote-text {
  font-family: var(--serif); font-size: clamp(20px, 2vw, 25px); line-height: 1.65;
  color: var(--ink); font-weight: 700; margin: 18px 0 26px;
}
.change-sec .btn { min-height: 46px; font-size: 14px; }
@media (max-width: 1200px) { .change-grid { grid-template-columns: 1fr; } .change-quote { max-width: 560px; } }
@media (max-width: 768px) {
  .change-sec { padding: 64px 0; }
  .change-steps { grid-template-columns: 1fr; }
}

/* ============================================================
   S03 AI获客闭环
   ============================================================ */
.loop-sec { padding: 100px 0 110px; position: relative; }
.loop-sec::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, var(--navy) 0%, #0C1B38 50%, var(--navy) 100%);
}
.loop-sec .container { position: relative; z-index: 2; }
.loop-flow { display: grid; grid-template-columns: repeat(8, 1fr); gap: 0; align-items: stretch; }
.loop-step { text-align: center; position: relative; padding: 0 6px; }
.loop-icon {
  width: 74px; height: 74px; margin: 0 auto 16px; border-radius: 50%;
  border: 1px solid rgba(200, 166, 106, .55); display: grid; place-items: center;
  background: radial-gradient(circle at 30% 25%, rgba(200, 166, 106, .18), rgba(200, 166, 106, .04));
  box-shadow: 0 0 30px rgba(200, 166, 106, .12), inset 0 0 18px rgba(200, 166, 106, .08);
  transition: box-shadow .3s, border-color .3s;
}
.loop-step:hover .loop-icon { border-color: var(--gold-2); box-shadow: 0 0 44px rgba(200, 166, 106, .3); }
.loop-icon svg { width: 30px; height: 30px; stroke: var(--gold-2); fill: none; stroke-width: 1.5; }
.loop-step b { display: block; color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.loop-step small { display: block; color: #8B97B2; font-size: 12px; line-height: 1.6; }
.loop-step:not(:last-child)::after {
  content: ""; position: absolute; top: 37px; left: calc(50% + 46px); right: calc(-50% + 46px);
  height: 1px; background: linear-gradient(90deg, rgba(200, 166, 106, .6), rgba(200, 166, 106, .18));
}
.loop-note {
  margin-top: 64px; text-align: center;
  font-family: var(--serif); font-size: clamp(19px, 2.2vw, 27px); line-height: 1.7; color: #fff; font-weight: 700;
}
@media (max-width: 1100px) {
  .loop-flow { grid-template-columns: repeat(4, 1fr); row-gap: 42px; }
  .loop-step:nth-child(4)::after { display: none; }
}
@media (max-width: 640px) {
  .loop-flow { grid-template-columns: repeat(2, 1fr); row-gap: 36px; }
  .loop-step:nth-child(2n)::after, .loop-step:last-child::after { display: none; }
}

/* ============================================================
   S04 AI获客检测
   ============================================================ */
.audit-sec { padding: 100px 0; background: var(--cream); }
.audit-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 64px; align-items: center; }
.audit-points { margin: 28px 0 34px; display: grid; gap: 14px; }
.audit-point { display: flex; gap: 12px; align-items: baseline; font-size: 15px; color: var(--ink); }
.audit-point::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); flex: none; transform: translateY(-2px); }
.audit-panel {
  background: linear-gradient(165deg, #10203E, #0B1730 70%);
  border: 1px solid rgba(200, 166, 106, .3); border-radius: var(--radius-lg);
  padding: 26px 26px 24px; box-shadow: var(--shadow-d);
}
.audit-report { display: block; width: 100%; height: auto; border-radius: 10px; margin-bottom: 18px; }
.audit-panel .btn { min-height: 46px; font-size: 14px; }
.audit-note { text-align: center; font-size: 12px; color: #7E8AA6; margin-top: 12px; }
@media (max-width: 1024px) { .audit-grid { grid-template-columns: 1fr; gap: 44px; } .audit-panel { max-width: 620px; } }
@media (max-width: 560px) { .audit-sec { padding: 64px 0; } .audit-panel { padding: 14px 14px 18px; } }

/* ============================================================
   S05 黄金信源
   ============================================================ */
.gs-sec { padding: 100px 0 110px; background: linear-gradient(180deg, var(--navy), #0D1B36 55%, var(--navy)); position: relative; }
.gs-net {
  position: relative; margin-top: 20px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.gs-node {
  background: rgba(255, 255, 255, .035); border: 1px solid rgba(200, 166, 106, .22);
  border-radius: var(--radius); padding: 20px 18px; text-align: center;
  transition: transform .25s, border-color .25s, background .25s;
}
.gs-node:hover { transform: translateY(-3px); border-color: rgba(200, 166, 106, .6); background: rgba(200, 166, 106, .07); }
.gs-node .ico { font-size: 22px; margin-bottom: 8px; display: block; }
.gs-node b { display: block; color: #EDF0F7; font-size: 14.5px; font-weight: 600; }
.gs-node small { display: block; color: #7E8AA6; font-size: 11.5px; margin-top: 4px; letter-spacing: .06em; }
.gs-brand {
  margin-top: 56px; text-align: center;
  border-top: 1px solid rgba(200, 166, 106, .18); padding-top: 46px;
}
.gs-brand .en { font-size: 13px; letter-spacing: .5em; color: var(--gold); text-transform: uppercase; }
.gs-brand .zh { font-family: var(--serif); font-size: clamp(24px, 3vw, 36px); color: #fff; font-weight: 800; margin-top: 12px; letter-spacing: .1em; }
.gs-brand p { color: #8B97B2; font-size: 14.5px; margin-top: 14px; max-width: 560px; margin-left: auto; margin-right: auto; }
@media (max-width: 1024px) { .gs-net { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .gs-net { grid-template-columns: repeat(2, 1fr); } .gs-sec { padding: 64px 0; } }

/* ============================================================
   S06 SGEO
   ============================================================ */
.sgeo-sec { padding: 100px 0; background: var(--cream); }
.sgeo-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin: 8px 0 40px; }
.sgeo-box { background: #fff; border: 1px solid var(--line-l); border-radius: var(--radius-lg); padding: 30px 30px 26px; box-shadow: var(--shadow-l); }
.sgeo-box h3 { font-size: 17px; color: var(--ink); font-weight: 700; margin-bottom: 10px; }
.sgeo-box p { color: var(--muted); font-size: 14.5px; }
.sgeo-box.hot { background: var(--navy); border-color: rgba(200, 166, 106, .4); }
.sgeo-box.hot h3 { color: var(--gold-2); }
.sgeo-box.hot p { color: #B9C2D6; }
.sgeo-box .q { font-family: var(--serif); font-size: 19px; display: block; margin-top: 14px; line-height: 1.6; }
.sgeo-box .q { color: var(--ink); }
.sgeo-box.hot .q { color: #fff; }
.sgeo-engines { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 44px; }
.sgeo-engines .chip {
  padding: 9px 20px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
  background: #fff; color: var(--ink); border: 1px solid var(--line-l);
  transition: border-color .2s, color .2s, transform .2s;
}
.sgeo-engines .chip:hover { border-color: var(--gold); color: #8a6a33; transform: translateY(-2px); }
.sgeo-steps { display: grid; grid-template-columns: repeat(7, 1fr); gap: 0; counter-reset: step; }
.sgeo-step { text-align: center; position: relative; padding: 0 8px; }
.sgeo-step .num {
  width: 44px; height: 44px; margin: 0 auto 14px; border-radius: 50%;
  display: grid; place-items: center; counter-increment: step;
  background: var(--navy-2); color: var(--gold-2); font-family: var(--serif);
  font-size: 16px; font-weight: 700; border: 1px solid rgba(200, 166, 106, .4);
}
.sgeo-step .num::before { content: counter(step, decimal-leading-zero); }
.sgeo-step b { display: block; font-size: 14.5px; color: var(--ink); }
.sgeo-step:not(:last-child)::after {
  content: ""; position: absolute; top: 22px; left: calc(50% + 32px); right: calc(-50% + 32px);
  height: 1px; background: linear-gradient(90deg, var(--gold), rgba(200, 166, 106, .2));
}
@media (max-width: 1024px) { .sgeo-steps { grid-template-columns: repeat(4, 1fr); row-gap: 34px; } .sgeo-step:nth-child(4)::after { display: none; } }
@media (max-width: 640px) { .sgeo-steps { grid-template-columns: repeat(2, 1fr); } .sgeo-step:nth-child(2n)::after { display: none; } .sgeo-compare { grid-template-columns: 1fr; } .sgeo-sec { padding: 64px 0; } }

/* ============================================================
   S07 AI蓝军
   ============================================================ */
.blue-sec {
  padding: 110px 0; position: relative; overflow: hidden;
  background:
    radial-gradient(900px 500px at 85% 10%, rgba(200, 166, 106, .1), transparent 60%),
    linear-gradient(165deg, #0E1F3E 0%, var(--navy) 45%, #091226 100%);
}
.blue-sec::before, .blue-sec::after {
  content: ""; position: absolute; border-radius: 50%;
  border: 1px solid rgba(200, 166, 106, .14); pointer-events: none;
}
.blue-sec::before { width: 620px; height: 620px; top: -260px; right: -180px; }
.blue-sec::after { width: 420px; height: 420px; bottom: -160px; left: -120px; }
.blue-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 70px; align-items: center; position: relative; z-index: 2; }
.blue-slogan { font-family: var(--serif); font-size: clamp(26px, 3.2vw, 40px); line-height: 1.5; color: #fff; font-weight: 800; margin: 20px 0; }
.blue-roles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.blue-role {
  background: rgba(255, 255, 255, .04); border: 1px solid rgba(200, 166, 106, .25);
  border-radius: var(--radius); padding: 22px 14px; text-align: center;
  transition: transform .25s, border-color .25s;
}
.blue-role:hover { transform: translateY(-4px); border-color: var(--gold); }
.blue-role .ico {
  width: 48px; height: 48px; margin: 0 auto 12px; border-radius: 12px;
  display: grid; place-items: center; font-size: 22px;
  background: linear-gradient(145deg, rgba(200, 166, 106, .2), rgba(200, 166, 106, .05));
  border: 1px solid rgba(200, 166, 106, .3);
}
.blue-role b { display: block; color: #EDF0F7; font-size: 15px; font-weight: 600; }
.blue-role small { display: block; color: #7E8AA6; font-size: 12px; margin-top: 4px; }
.blue-say { margin: 44px 0 34px; display: grid; gap: 10px; }
.blue-say span { color: #93A0B8; font-size: 15px; display: flex; gap: 10px; align-items: baseline; }
.blue-say span::before { content: "×"; color: #5A6478; font-weight: 700; }
.blue-say strong { color: var(--champagne); font-family: var(--serif); font-size: 18px; display: flex; gap: 10px; align-items: baseline; font-weight: 700; }
.blue-say strong::before { content: "✓"; color: var(--gold); }
@media (max-width: 1024px) { .blue-grid { grid-template-columns: 1fr; gap: 44px; } }
@media (max-width: 640px) { .blue-roles { grid-template-columns: repeat(2, 1fr); } .blue-sec { padding: 68px 0; } }

/* ============================================================
   S08 AI员工
   ============================================================ */
.emp-sec { padding: 100px 0; background: var(--cream); }
.emp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.emp-card {
  background: #fff; border: 1px solid var(--line-l); border-radius: var(--radius-lg);
  padding: 30px 28px; box-shadow: var(--shadow-l); position: relative; overflow: hidden;
  transition: transform .25s, box-shadow .25s;
}
.emp-card:hover { transform: translateY(-4px); box-shadow: 0 26px 60px rgba(23, 32, 51, .13); }
.emp-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0; transition: opacity .3s;
}
.emp-card:hover::before { opacity: 1; }
.emp-card .role-ico {
  width: 56px; height: 56px; border-radius: 14px; margin-bottom: 18px;
  display: grid; place-items: center; font-size: 26px;
  background: linear-gradient(145deg, rgba(200, 166, 106, .16), rgba(200, 166, 106, .04));
  border: 1px solid rgba(200, 166, 106, .3);
}
.emp-card h3 { font-size: 18px; font-weight: 700; color: var(--ink); }
.emp-card p { color: var(--muted); font-size: 14px; margin-top: 8px; }
.emp-more { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.emp-more .chip {
  padding: 10px 22px; border-radius: 999px; background: #fff; border: 1px solid var(--line-l);
  font-size: 13.5px; color: var(--ink); font-weight: 600;
  transition: border-color .2s, background .2s;
}
.emp-more .chip:hover { border-color: var(--gold); background: rgba(200, 166, 106, .07); }
.emp-slogan {
  margin-top: 60px; text-align: center; font-family: var(--serif);
  font-size: clamp(21px, 2.6vw, 30px); color: var(--ink); font-weight: 800; line-height: 1.7;
}
@media (max-width: 900px) { .emp-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .emp-grid { grid-template-columns: 1fr; } .emp-sec { padding: 64px 0; } }

/* ============================================================
   S09 产业平台矩阵
   ============================================================ */
.plat-sec { padding: 100px 0 110px; background: linear-gradient(180deg, var(--navy), #0C1930); }
.plat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.plat-card {
  border: 1px solid rgba(200, 166, 106, .22); border-radius: var(--radius-lg);
  padding: 30px 28px; background: rgba(255, 255, 255, .025);
  transition: transform .25s, border-color .25s, background .25s;
}
.plat-card:hover { transform: translateY(-4px); border-color: rgba(200, 166, 106, .55); background: rgba(200, 166, 106, .05); }
.plat-card .plat-name { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.plat-card .plat-name .logo {
  width: 42px; height: 42px; border-radius: 11px; flex: none; display: grid; place-items: center;
  background: linear-gradient(145deg, rgba(200, 166, 106, .22), rgba(200, 166, 106, .05));
  border: 1px solid rgba(200, 166, 106, .35); font-size: 19px;
}
.plat-card h3 { font-size: 17.5px; color: #EDF0F7; font-weight: 700; }
.plat-card h3 small { display: block; font-size: 11px; color: var(--gold); letter-spacing: .14em; margin-top: 2px; font-weight: 500; }
.plat-card p { color: #93A0B8; font-size: 13.8px; margin-bottom: 14px; }
.plat-card .why {
  border-top: 1px dashed rgba(200, 166, 106, .25); padding-top: 12px;
  font-size: 12.8px; color: var(--champagne); line-height: 1.7;
}
.plat-card .why b { color: var(--gold-2); font-weight: 600; }
@media (max-width: 960px) { .plat-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .plat-grid { grid-template-columns: 1fr; } .plat-sec { padding: 64px 0; } }

/* ============================================================
   S10 制造业
   ============================================================ */
.mfg-sec { position: relative; overflow: hidden; background: var(--navy); color: #E9EDF5; }
.mfg-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 30%; }
.mfg-sec::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(11, 23, 48, .97) 0%, rgba(11, 23, 48, .88) 38%, rgba(11, 23, 48, .45) 72%, rgba(11, 23, 48, .3) 100%),
              linear-gradient(0deg, rgba(11, 23, 48, .95) 0%, transparent 34%);
}
.mfg-inner { position: relative; z-index: 2; padding: 110px 0 90px; max-width: 620px; }
.mfg-inner .mfg-metrics { display: flex; gap: 44px; margin: 34px 0 36px; flex-wrap: wrap; }
.mfg-metrics b { font-family: var(--serif); font-size: 32px; color: var(--gold-2); display: block; font-weight: 800; }
.mfg-metrics span { display: block; color: #93A0B8; font-size: 13px; margin-top: 4px; letter-spacing: .06em; }
.mfg-flow-list { margin: 40px 0 10px; display: grid; gap: 0; }
.mfg-flow-item {
  display: flex; align-items: center; gap: 14px; padding: 11px 0;
  border-bottom: 1px dashed rgba(200, 166, 106, .2); font-size: 15px; color: #D5DCEA;
}
.mfg-flow-item .n {
  width: 26px; height: 26px; border-radius: 50%; flex: none; display: grid; place-items: center;
  border: 1px solid rgba(200, 166, 106, .5); color: var(--gold-2); font-size: 12px; font-family: var(--serif);
}
@media (max-width: 768px) {
  .mfg-sec::after { background: linear-gradient(180deg, rgba(11, 23, 48, .82), rgba(11, 23, 48, .96)); }
  .mfg-inner { padding: 72px 0 64px; max-width: 100%; }
}

/* ============================================================
   S11 国内+海外 GEO
   ============================================================ */
.geo-sec { padding: 100px 0; background: var(--cream); }
.geo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.geo-card { background: #fff; border: 1px solid var(--line-l); border-radius: var(--radius-lg); padding: 34px 32px; box-shadow: var(--shadow-l); }
.geo-card h3 { font-family: var(--serif); font-size: 21px; font-weight: 800; color: var(--ink); display: flex; align-items: center; gap: 12px; }
.geo-card h3 .flag { font-size: 22px; }
.geo-card .engines { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 6px; }
.geo-card .engines span {
  padding: 8px 16px; border-radius: 8px; background: var(--cream);
  border: 1px solid var(--line-l); font-size: 13px; color: var(--ink); font-weight: 600;
}
.geo-identity {
  margin-top: 26px; text-align: center; padding: 40px 20px;
  background: var(--navy); border-radius: var(--radius-lg); position: relative; overflow: hidden;
}
.geo-identity::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px 200px at 50% 0%, rgba(200, 166, 106, .16), transparent 70%);
}
.geo-identity .en { position: relative; font-family: var(--serif); font-size: clamp(20px, 2.6vw, 30px); color: #fff; font-weight: 800; letter-spacing: .06em; line-height: 1.5; }
.geo-identity .en i { font-style: normal; color: var(--gold-2); }
.geo-identity p { position: relative; color: #93A0B8; font-size: 14px; margin-top: 12px; }
@media (max-width: 860px) { .geo-grid { grid-template-columns: 1fr; } .geo-sec { padding: 64px 0; } }

/* ============================================================
   S12 案例
   ============================================================ */
.case-sec { padding: 100px 0; background: var(--cream-2); }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
  background: #fff; border: 1px solid var(--line-l); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-l); display: flex; flex-direction: column;
  transition: transform .25s, box-shadow .25s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: 0 26px 60px rgba(23, 32, 51, .14); }
.case-cover { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--navy-2); }
.case-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .case-cover img { transform: scale(1.05); }
.case-cover .case-ind {
  position: absolute; top: 14px; left: 14px; padding: 5px 14px; border-radius: 999px;
  background: rgba(11, 23, 48, .82); color: var(--gold-2); font-size: 12px; font-weight: 600;
  backdrop-filter: blur(6px);
}
.case-body { padding: 24px 24px 22px; flex: 1; display: flex; flex-direction: column; }
.case-body h3 { font-size: 17px; color: var(--ink); font-weight: 700; margin-bottom: 8px; }
.case-body .meta { color: var(--muted); font-size: 12.5px; margin-bottom: 14px; letter-spacing: .04em; }
.case-body .desc { color: var(--muted); font-size: 13.8px; line-height: 1.75; }
.case-body .link { margin-top: auto; padding-top: 16px; color: #8a6a33; font-size: 13.5px; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.case-body .link:hover { color: var(--gold); }
@media (max-width: 960px) { .case-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .case-grid { grid-template-columns: 1fr; } .case-sec { padding: 64px 0; } }

/* ============================================================
   S13 研究中心
   ============================================================ */
.res-sec { padding: 100px 0 110px; background: linear-gradient(180deg, var(--navy), #0C1930); }
.res-cats { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; }
.res-cats .chip {
  padding: 9px 20px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
  border: 1px solid rgba(200, 166, 106, .3); color: var(--champagne);
  transition: background .2s, border-color .2s;
}
.res-cats .chip:hover { background: rgba(200, 166, 106, .1); border-color: var(--gold); }
.res-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.res-card {
  border: 1px solid rgba(255, 255, 255, .08); border-radius: var(--radius);
  padding: 24px 22px; background: rgba(255, 255, 255, .03);
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color .25s, transform .25s;
}
.res-card:hover { border-color: rgba(200, 166, 106, .5); transform: translateY(-3px); }
.res-card .cat { color: var(--gold); font-size: 11.5px; letter-spacing: .16em; font-weight: 600; }
.res-card h3 { color: #EDF0F7; font-size: 15.5px; font-weight: 600; line-height: 1.6; }
.res-card .date { color: #6B7690; font-size: 12px; margin-top: auto; }
@media (max-width: 960px) { .res-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .res-grid { grid-template-columns: 1fr; } .res-sec { padding: 64px 0; } }

/* ============================================================
   S14 关于聚商岛
   ============================================================ */
.about-sec { padding: 100px 0; background: var(--cream); }
.about-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.about-card {
  background: #fff; border: 1px solid var(--line-l); border-radius: var(--radius-lg);
  padding: 28px 24px; box-shadow: var(--shadow-l);
  transition: transform .25s, box-shadow .25s;
}
.about-card:hover { transform: translateY(-4px); box-shadow: 0 24px 56px rgba(23, 32, 51, .13); }
.about-card .ico {
  width: 50px; height: 50px; border-radius: 13px; margin-bottom: 16px; display: grid; place-items: center;
  font-size: 24px; background: linear-gradient(145deg, rgba(200, 166, 106, .16), rgba(200, 166, 106, .04));
  border: 1px solid rgba(200, 166, 106, .3);
}
.about-card h3 { font-size: 16.5px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.about-card p { color: var(--muted); font-size: 13.5px; line-height: 1.8; }
@media (max-width: 960px) { .about-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .about-grid { grid-template-columns: 1fr; } .about-sec { padding: 64px 0; } }

/* ============================================================
   S15 终极 CTA
   ============================================================ */
.cta-sec {
  padding: 110px 0; position: relative; overflow: hidden;
  background:
    radial-gradient(760px 420px at 50% -10%, rgba(200, 166, 106, .16), transparent 65%),
    linear-gradient(180deg, var(--navy), #091226);
  text-align: center;
}
.cta-sec .big {
  font-family: var(--serif); font-size: clamp(26px, 3.6vw, 44px);
  color: #fff; font-weight: 800; line-height: 1.5;
}
.cta-sec .sub { color: #93A0B8; font-size: 15px; margin: 18px auto 40px; max-width: 620px; }
.audit-form {
  max-width: 860px; margin: 0 auto; text-align: left;
  background: rgba(255, 255, 255, .04); border: 1px solid rgba(200, 166, 106, .28);
  border-radius: var(--radius-lg); padding: 36px 34px 30px;
  backdrop-filter: blur(8px);
}
.audit-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.af-field label { display: block; color: #C4CDDD; font-size: 13px; margin-bottom: 7px; }
.af-field label i { color: #E06C5A; font-style: normal; }
.af-field input, .af-field select {
  width: 100%; min-height: 48px; border-radius: 10px; padding: 0 15px;
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .14);
  color: #EDF0F7; font-size: 14.5px; font-family: inherit; outline: none;
  transition: border-color .2s, background .2s;
}
.af-field input:focus, .af-field select:focus { border-color: var(--gold); background: rgba(200, 166, 106, .06); }
.af-field select option { background: var(--navy-2); color: #fff; }
.audit-form .btn { margin-top: 10px; }
.cta-sec .tiny { color: #6B7690; font-size: 12.5px; margin-top: 16px; }
@media (max-width: 640px) {
  .audit-form { padding: 26px 20px; }
  .audit-form .row { grid-template-columns: 1fr; gap: 16px; }
  .cta-sec { padding: 72px 0; }
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer { background: #081021; color: #8B97AF; padding: 70px 0 0; font-size: 13.5px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 46px; }
.footer-grid h4 { color: var(--champagne); font-size: 14.5px; margin-bottom: 18px; letter-spacing: .08em; }
.footer-grid a { display: block; padding: 5px 0; color: #7E8AA6; transition: color .2s; }
.footer-grid a:hover { color: var(--gold-2); }
.footer-grid p { line-height: 2; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer-brand strong { font-family: var(--serif); color: #fff; font-size: 20px; letter-spacing: .14em; display: block; }
.footer-brand small { font-size: 9px; letter-spacing: .26em; color: var(--gold); display: block; margin-top: 2px; }
.footer-legal {
  border-top: 1px solid rgba(255, 255, 255, .07); padding: 22px 0;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: #5F6B84;
}
.footer-legal a { color: #5F6B84; }
.footer-legal a:hover { color: var(--gold-2); }
@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr 1fr; } }
@media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; } }

/* ============================================================
   子页面通用
   ============================================================ */
.page-hero {
  position: relative; overflow: hidden; color: #fff; text-align: center;
  padding: 92px 0 84px;
  background:
    radial-gradient(800px 400px at 50% 0%, rgba(38, 70, 128, .5), transparent 65%),
    linear-gradient(178deg, #0B1730, #0E1C3A);
}
.page-hero .eyebrow { margin-bottom: 16px; display: block; }
.page-hero h1 {
  font-family: var(--serif); font-size: clamp(30px, 4.2vw, 50px);
  font-weight: 800; line-height: 1.35; letter-spacing: .02em;
}
.page-hero .desc { color: #B9C2D6; max-width: 680px; margin: 20px auto 0; font-size: 15.5px; }
.page-hero .skyline { position: absolute; bottom: -2px; left: 0; width: 100%; height: 140px; object-fit: cover; object-position: 50% 30%; opacity: .5; pointer-events: none;
  mask-image: linear-gradient(180deg, transparent, #000 60%); -webkit-mask-image: linear-gradient(180deg, transparent, #000 60%); }
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  padding: 18px 0; background: #fff; border-bottom: 1px solid var(--line-l);
  font-size: 13px; color: var(--muted);
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: #8a6a33; }
.breadcrumb .sep { margin: 0 8px; color: #C4C9D4; }

.prose-sec { padding: 88px 0; }
.prose-sec.alt { background: var(--cream-2); }
.feature-grid { display: grid; gap: 20px; }
.feature-grid.c2 { grid-template-columns: 1fr 1fr; }
.feature-grid.c3 { grid-template-columns: repeat(3, 1fr); }
.feature-card {
  background: #fff; border: 1px solid var(--line-l); border-radius: var(--radius-lg);
  padding: 30px 28px; box-shadow: var(--shadow-l); transition: transform .25s, box-shadow .25s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 24px 56px rgba(23, 32, 51, .13); }
.feature-card .ico {
  width: 54px; height: 54px; border-radius: 14px; margin-bottom: 18px; display: grid; place-items: center; font-size: 26px;
  background: linear-gradient(145deg, rgba(200, 166, 106, .16), rgba(200, 166, 106, .04));
  border: 1px solid rgba(200, 166, 106, .3);
}
.feature-card h3 { font-size: 17.5px; font-weight: 700; color: var(--ink); margin-bottom: 10px; }
.feature-card p { color: var(--muted); font-size: 14px; line-height: 1.85; }
.feature-card ul { margin-top: 12px; }
.feature-card ul li { padding: 6px 0 6px 20px; position: relative; color: var(--ink); font-size: 14px; }
.feature-card ul li::before { content: ""; position: absolute; left: 2px; top: 14px; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); }
@media (max-width: 900px) { .feature-grid.c3, .feature-grid.c2 { grid-template-columns: 1fr; } }

/* FAQ */
.faq-list { max-width: 840px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--line-l); border-radius: var(--radius); margin-bottom: 14px; overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; padding: 20px 24px; display: flex; justify-content: space-between; gap: 16px;
  font-size: 15.5px; font-weight: 600; color: var(--ink); min-height: 48px; align-items: center;
}
.faq-q .pm { color: var(--gold); font-size: 20px; flex: none; transition: transform .25s; line-height: 1; }
.faq-item.open .faq-q .pm { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a-inner { padding: 0 24px 20px; color: var(--muted); font-size: 14.5px; line-height: 1.9; }

/* CTA 横条 */
.cta-band { background: var(--navy); padding: 64px 0; }
.cta-band .inner {
  display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap;
}
.cta-band h2 { font-family: var(--serif); font-size: clamp(21px, 2.4vw, 28px); color: #fff; font-weight: 800; }
.cta-band p { color: #93A0B8; margin-top: 8px; font-size: 14px; }

/* ============================================================
   浮窗 + AI客服 + 弹窗（保留线上版本样式，主题微调）
   ============================================================ */
.ylw-float-wrap { position: fixed; right: 20px; bottom: 30px; z-index: 99998; display: flex; flex-direction: column; gap: 14px; align-items: flex-end; }
.ylw-float-btn { width: 56px; height: 56px; border-radius: 50%; display: block; cursor: pointer; box-shadow: 0 6px 22px rgba(11, 23, 48, .34), 0 0 0 2px rgba(200, 166, 106, .5); transition: transform .25s, box-shadow .25s; position: relative; overflow: visible; }
.ylw-float-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 28px rgba(11, 23, 48, .42), 0 0 0 2px rgba(200, 166, 106, .9); }
.ylw-float-btn img { display: block; width: 100%; height: 100%; border-radius: 50%; }
.ylw-float-btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.ylw-float-label { position: absolute; right: 66px; top: 50%; transform: translateY(-50%); white-space: nowrap; background: #0B1730; color: #fff; font-size: 13px; padding: 6px 14px; border-radius: 8px; opacity: 0; pointer-events: none; transition: opacity .25s; }
.ylw-float-btn:hover .ylw-float-label, .ylw-float-btn:focus-visible .ylw-float-label { opacity: 1; }
.ylw-float-label::after { content: ''; position: absolute; right: -5px; top: 50%; transform: translateY(-50%); border: 5px solid transparent; border-left-color: #0B1730; }
.ylw-modal-mask { position: fixed; inset: 0; background: rgba(0, 0, 0, .5); z-index: 99999; display: none; align-items: center; justify-content: center; padding: 20px; }
.ylw-modal-mask.show { display: flex; }
.ylw-modal { background: #fff; border-radius: 16px; width: 100%; max-width: 360px; padding: 28px 24px; position: relative; animation: ylwPop .3s ease; max-height: 90vh; overflow: auto; }
@keyframes ylwPop { from { transform: scale(.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.ylw-modal-close { position: absolute; top: 12px; right: 16px; font-size: 22px; color: #9ca3af; cursor: pointer; background: none; border: none; line-height: 1; }
.ylw-modal-close:hover { color: #374151; }
.ylw-modal h3 { text-align: center; font-size: 18px; font-weight: 700; color: #1f2937; margin: 0 0 6px; }
.ylw-modal .sub { text-align: center; font-size: 13px; color: #6b7280; margin: 0 0 18px; }
.ylw-qr-box { text-align: center; margin: 8px 0 16px; }
.ylw-qr-box img { width: 180px; height: 180px; border-radius: 12px; border: 1px solid #e5e7eb; margin: 0 auto; }
.ylw-qr-tip { background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: 10px; padding: 10px 14px; font-size: 13px; color: #15803d; line-height: 1.6; margin: 8px 0 0; }
.ylw-qr-tip b { color: #166534; }
.ylw-form-group { margin-bottom: 12px; }
.ylw-form-group label { display: block; font-size: 13px; color: #374151; margin-bottom: 4px; font-weight: 500; }
.ylw-form-group label .req { color: #ef4444; }
.ylw-form-group input, .ylw-form-group textarea, .ylw-form-group select {
  width: 100%; border: 1px solid #d1d5db; border-radius: 8px; padding: 10px 12px; font-size: 14px; box-sizing: border-box; transition: border-color .2s; font-family: inherit; outline: none; background: #fff;
}
.ylw-form-group input:focus, .ylw-form-group textarea:focus { border-color: #f59e0b; }
.ylw-form-group textarea { resize: vertical; min-height: 80px; }
.ylw-submit-btn { width: 100%; padding: 12px; background: linear-gradient(135deg, #f59e0b, #d97706); color: #fff; border: none; border-radius: 10px; font-size: 15px; font-weight: 600; cursor: pointer; transition: opacity .2s; }
.ylw-submit-btn:hover { opacity: .9; }
.ylw-submit-btn:disabled { opacity: .5; cursor: not-allowed; }
.ylw-toast { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background: rgba(0, 0, 0, .8); color: #fff; padding: 14px 28px; border-radius: 12px; font-size: 14px; z-index: 100000; display: none; }
.ylw-toast.show { display: block; }

/* AI客服（机器人悬浮入口，固定于联系浮窗组上方，互不重叠） */
.ylw-home-ai { position: fixed; right: 20px; bottom: 244px; z-index: 9999; font-family: inherit; }
.ylw-home-ai-bubble { display: flex; flex-direction: column; align-items: center; gap: 5px; border: 0; background: none; padding: 0; cursor: pointer; }
.ylw-robot-img { display: block; width: 62px; animation: ylwRobotFloat 3.2s ease-in-out infinite; }
.ylw-robot-img img { display: block; width: 100%; height: auto; filter: drop-shadow(0 8px 18px rgba(13, 30, 56, .30)); transition: transform .25s; }
.ylw-home-ai-bubble:hover .ylw-robot-img img { transform: scale(1.07); }
@keyframes ylwRobotFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
.ylw-robot-tag { font-size: 12px; font-weight: 700; letter-spacing: .05em; color: #0d2b4f; background: linear-gradient(135deg, #fffdf8, #f4ead3); border: 1px solid #ead7ab; padding: 3px 12px; border-radius: 999px; box-shadow: 0 4px 14px rgba(15, 31, 55, .16); white-space: nowrap; }
.ylw-home-ai-head .ylw-home-ai-avatar { width: 48px; height: 48px; border-radius: 15px; overflow: hidden; flex: none; background: #fff; }
.ylw-home-ai-head .ylw-home-ai-avatar img { width: 100%; height: 100%; object-fit: cover; border-radius: inherit; display: block; }
.ylw-home-ai-avatar svg { display: block; }
.ylw-home-ai-panel { display: none; width: min(350px, calc(100vw - 30px)); height: min(420px, calc(100vh - 380px)); margin-bottom: 12px; border-radius: 20px; overflow: hidden; background: #fffdf8; border: 1px solid #ead7ab; box-shadow: 0 18px 60px rgba(15, 31, 55, .28); }
.ylw-home-ai.open .ylw-home-ai-panel { display: flex; flex-direction: column; }
.ylw-home-ai-head { display: flex; align-items: center; gap: 10px; padding: 13px 15px; background: #0d2b4f; color: #fff; }
.ylw-home-ai-head small { display: block; color: #d7c28e; font-size: 11px; margin-top: 3px; }
.ylw-home-ai-head button { margin-left: auto; border: 0; background: none; color: #fff; font-size: 24px; cursor: pointer; }
.ylw-home-ai-msgs { flex: 1; overflow: auto; padding: 14px; background: #faf8f1; }
.ylw-home-ai-msg { max-width: 84%; padding: 9px 11px; border-radius: 12px; margin-bottom: 9px; font-size: 13px; line-height: 1.55; }
.ylw-home-ai-msg.ai { background: #fff; border: 1px solid #eadfc8; color: #243654; display: flex; align-items: flex-start; gap: 7px; }
.ylw-home-ai-msg.user { margin-left: auto; background: #d9ae5d; color: #172b4d; }
.ylw-home-ai-msg-avatar { width: 24px; height: 24px; flex: none; border-radius: 7px; display: grid; place-items: center; background: linear-gradient(145deg, #4a90d9, #1a4b8e); font-size: 15px; }
.ylw-home-ai-typing { color: #55708f; }
.ylw-home-ai-form { display: flex; gap: 8px; padding: 11px; border-top: 1px solid #eadfc8; }
.ylw-home-ai-form input { flex: 1; border: 1px solid #e3d7bb; border-radius: 10px; padding: 10px; min-width: 0; }
.ylw-home-ai-form button { border: 0; border-radius: 10px; padding: 0 15px; background: #0d2b4f; color: #fff; cursor: pointer; }
@media (max-width: 640px) { .ylw-home-ai { right: 14px; bottom: 272px; } .ylw-home-ai-panel { height: min(420px, calc(100vh - 330px)); } }

/* ============================================================
   动画（克制的 reveal）
   ============================================================ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; } .reveal.d4 { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-visual .globe { animation: none; }
  .ylw-robot-img { animation: none; }
  html { scroll-behavior: auto; }
}

/* 移动端底部固定 CTA */
.mobile-cta {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 9990;
  background: rgba(11, 23, 48, .96); backdrop-filter: blur(12px);
  border-top: 1px solid rgba(200, 166, 106, .25);
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
  gap: 10px;
}
.mobile-cta .btn { flex: 1; min-height: 44px; font-size: 13.5px; padding: 0 8px; }
@media (max-width: 768px) { .mobile-cta { display: flex; } .ylw-float-wrap { bottom: 78px; } .ylw-home-ai { bottom: 292px; } }

/* ============================================================
   404 页面
   ============================================================ */
.nf-wrap { min-height: 100vh; display: flex; align-items: center; padding: 80px 0;
  background: radial-gradient(1100px 500px at 50% -10%, rgba(200, 166, 106, .16), transparent 60%), var(--navy); }
.nf-inner { text-align: center; }
.nf-code { font-family: var(--serif); font-size: 96px; font-weight: 700; line-height: 1;
  background: linear-gradient(160deg, var(--gold-3), var(--gold) 60%, #9a7c44);
  -webkit-background-clip: text; background-clip: text; color: transparent; letter-spacing: .04em; }
.nf-inner h1 { font-family: var(--serif); color: #fff; font-size: 30px; margin: 18px 0 12px; }
.nf-inner p { color: var(--muted-l); max-width: 520px; margin: 0 auto 30px; }
.nf-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.nf-links { display: flex; gap: 22px; justify-content: center; flex-wrap: wrap; padding-top: 26px; border-top: 1px solid var(--line-d); }
.nf-links a { color: var(--champagne); font-size: 14px; opacity: .85; }
.nf-links a:hover { opacity: 1; color: var(--gold-2); }
@media (max-width: 640px) { .nf-code { font-size: 72px; } .nf-inner h1 { font-size: 22px; } .nf-links { gap: 14px; } }