/* ============================================================
   海龟科技工作室 · 高端暗色系统 v3 (深海青绿单色)
   字体:Sora(拉丁/英文/数字) + Noto Sans SC / PingFang(中文)
   设计:单一青绿强调色 · 去霓虹外发光 · 克制精致
   ============================================================ */
:root {
  --bg: #07080b;
  --bg-2: #0b0e13;
  --surface: rgba(255, 255, 255, 0.024);
  --surface-2: rgba(255, 255, 255, 0.048);
  --surface-3: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.072);
  --border-2: rgba(255, 255, 255, 0.14);

  --text: #f3f6fb;
  --text-2: #bcc4d2;
  --muted: #828b9d;
  --muted-2: #565e70;

  /* —— 唯一强调色:深海青绿 —— */
  --accent: #2dd4bf;
  --accent-bright: #6ff0dc;
  --accent-deep: #12a594;
  --accent-ink: #042521;
  --accent-soft: rgba(45, 212, 191, 0.09);
  --accent-line: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.5), transparent);
  /* 同色系微渐变,仅用于按钮/细分隔,不做彩虹 */
  --grad: linear-gradient(118deg, #5fe9d5, #2dd4bf 58%, #14b8a6);

  --font-cjk: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font: "Sora", "PingFang SC", "Noto Sans SC", "Microsoft YaHei",
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --maxw: 1140px;
  --radius: 16px;
  --radius-sm: 12px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-2);
  line-height: 1.7;
  font-weight: 600;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
::selection { background: rgba(45, 212, 191, 0.24); color: #fff; }

/* ---------- 背景层(单色青绿 · 克制) ---------- */
.bg-fx { position: fixed; inset: 0; z-index: -2; pointer-events: none; overflow: hidden; }
.bg-fx::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: radial-gradient(ellipse 78% 58% at 50% -6%, #000 22%, transparent 74%);
  -webkit-mask-image: radial-gradient(ellipse 78% 58% at 50% -6%, #000 22%, transparent 74%);
}
.orb { position: absolute; border-radius: 50%; filter: blur(140px); opacity: 0.55; }
.orb--1 { width: 540px; height: 540px; background: rgba(20, 165, 148, 0.34); top: -200px; left: -160px; animation: float1 26s var(--ease) infinite; }
.orb--2 { width: 460px; height: 460px; background: rgba(45, 212, 191, 0.16); top: 240px; right: -180px; animation: float2 30s var(--ease) infinite; }
.orb--3 { width: 380px; height: 380px; background: rgba(18, 165, 148, 0.2); bottom: -180px; left: 34%; animation: float1 34s var(--ease) infinite reverse; }
@keyframes float1 { 50% { transform: translate(46px, 40px) scale(1.06); } }
@keyframes float2 { 50% { transform: translate(-40px, 32px) scale(1.05); } }

/* ---------- 容器 ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
section { position: relative; }

/* ============================================================
   导航
   ============================================================ */
.nav { position: sticky; top: 0; z-index: 100; transition: background 0.4s var(--ease), border-color 0.4s; border-bottom: 1px solid transparent; }
.nav__inner { max-width: var(--maxw); margin: 0 auto; display: flex; align-items: center; gap: 22px; padding: 19px 28px; transition: padding 0.4s var(--ease); }
.nav.scrolled { background: rgba(7, 8, 11, 0.72); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-color: var(--border); }
.nav.scrolled .nav__inner { padding: 12px 28px; }

.brand { display: flex; align-items: center; gap: 11px; margin-right: auto; }
.brand__chip {
  width: 34px; height: 34px; flex-shrink: 0; border-radius: 10px; padding: 5px;
  background: linear-gradient(160deg, #ffffff, #e6ecf5);
  display: grid; place-items: center;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14), 0 6px 18px rgba(0, 0, 0, 0.4);
  transition: transform 0.5s var(--ease);
}
.brand__chip img { width: 100%; height: 100%; object-fit: contain; }
.brand:hover .brand__chip { transform: rotate(-6deg) scale(1.06); }
.brand__text { display: flex; flex-direction: column; justify-content: center; line-height: 1.12; }
.brand__name { font-weight: 600; font-size: 15.5px; letter-spacing: 0.01em; color: var(--text); }
.brand__tag { font-family: "Sora", var(--font-cjk); font-size: 9px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted-2); margin-top: 3px; white-space: nowrap; }

.nav__links { display: flex; gap: 2px; }
.nav__links a { padding: 8px 15px; border-radius: 9px; color: var(--muted); font-size: 14.5px; font-weight: 600; position: relative; transition: color 0.25s, background 0.25s; }
.nav__links a:hover { color: var(--text); }
.nav__links a.active { color: var(--text); }
.nav__links a.active::after { content: ""; position: absolute; left: 15px; right: 15px; bottom: 3px; height: 2px; background: var(--accent); border-radius: 2px; }
.nav__toggle { display: none; background: none; border: 1px solid var(--border-2); color: var(--text); width: 40px; height: 40px; border-radius: 10px; cursor: pointer; align-items: center; justify-content: center; }
.nav__toggle svg { width: 20px; height: 20px; }

/* ============================================================
   按钮(实色青绿 · 无霓虹)
   ============================================================ */
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 11px; border: none; cursor: pointer;
  font-family: inherit; font-size: 14.5px; font-weight: 600; color: var(--accent-ink);
  background: var(--grad); overflow: hidden; white-space: nowrap;
  box-shadow: 0 4px 18px rgba(20, 165, 148, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.28);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), filter 0.3s var(--ease);
}
.btn::after { content: ""; position: absolute; top: 0; left: -130%; width: 55%; height: 100%; background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.42), transparent); transform: skewX(-18deg); transition: left 0.75s var(--ease); }
.btn:hover { transform: translateY(-2px); filter: brightness(1.06); box-shadow: 0 10px 28px rgba(20, 165, 148, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.32); }
.btn:active { transform: translateY(0); }
.btn:hover::after { left: 140%; }
.btn--sm { padding: 10px 17px; font-size: 13.5px; }
.btn--ghost { background: transparent; color: var(--text); border: 1px solid var(--border-2); box-shadow: none; }
.btn--ghost::after { display: none; }
.btn--ghost:hover { background: var(--surface-2); border-color: rgba(45, 212, 191, 0.5); transform: translateY(-2px); box-shadow: none; filter: none; }

/* ============================================================
   通用排版
   ============================================================ */
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: "Sora", var(--font-cjk); font-size: 11.5px; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent);
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--accent); opacity: 0.7; }
.gradient-text { color: var(--accent); }

h1, h2, h3, h4 { color: var(--text); font-weight: 600; line-height: 1.18; letter-spacing: -0.015em; }
.section-head { max-width: 690px; margin-bottom: 54px; }
.section-head .eyebrow { margin-bottom: 18px; }
.section-head h2 { font-size: clamp(27px, 3.6vw, 41px); font-weight: 700; margin-bottom: 15px; letter-spacing: -0.025em; }
.section-head p { color: var(--muted); font-size: 16.5px; font-weight: 600; line-height: 1.72; }
.section-pad { padding: 108px 0; }

/* 滚动渐显 */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: 0.08s; }
.reveal[data-d="2"] { transition-delay: 0.16s; }
.reveal[data-d="3"] { transition-delay: 0.24s; }
.reveal[data-d="4"] { transition-delay: 0.32s; }

/* ============================================================
   HERO
   ============================================================ */
.hero { position: relative; padding: 60px 0 44px; min-height: 88vh; display: flex; align-items: center; }
#net { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.hero__inner { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; width: 100%; }
.hero__grid { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 48px; align-items: center; }
.hero .eyebrow { margin-bottom: 24px; }
.hero h1 { font-size: clamp(38px, 5.6vw, 66px); font-weight: 700; letter-spacing: -0.035em; line-height: 1.08; margin-bottom: 24px; color: var(--text); }
.hero h1 .shine {
  background: linear-gradient(100deg, #6ff0dc, #2dd4bf 45%, #6ff0dc); background-size: 220% auto;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shine 9s linear infinite;
}
@keyframes shine { to { background-position: 220% center; } }
.hero__sub { font-size: clamp(15.5px, 1.5vw, 18px); color: var(--muted); font-weight: 600; max-width: 522px; margin-bottom: 34px; line-height: 1.8; }
.hero__sub b { color: var(--text-2); font-weight: inherit; }
.hero__cta { display: flex; gap: 13px; flex-wrap: wrap; }
.hero__stats { display: flex; gap: 40px; margin-top: 50px; }
.hero__stats > div { position: relative; }
.hero__stats .n { font-family: "Sora", var(--font-cjk); font-size: 26px; font-weight: 700; letter-spacing: -0.01em; color: var(--accent); }
.hero__stats .l { font-size: 12.5px; color: var(--muted-2); margin-top: 4px; letter-spacing: 0.02em; }

/* 轨道节点(AI 核心) */
.orbit { position: relative; width: 100%; aspect-ratio: 1; max-width: 400px; margin: 0 auto; display: grid; place-items: center; }
.orbit__core { position: absolute; width: 138px; height: 138px; border-radius: 50%; display: grid; place-items: center; background: radial-gradient(circle at 50% 45%, rgba(45, 212, 191, 0.18), rgba(18, 165, 148, 0.08) 54%, transparent 72%); box-shadow: 0 0 50px rgba(45, 212, 191, 0.22); animation: bob 6s var(--ease) infinite; }
.orbit__core .ai-core { width: 82px; height: 82px; filter: drop-shadow(0 0 8px rgba(45, 212, 191, 0.45)); animation: spin 34s linear infinite; }
.orbit__core .ai-core .nucleus { animation: pulse 3.6s var(--ease) infinite; transform-origin: center; }
@keyframes bob { 50% { transform: translateY(-10px); } }
@keyframes pulse { 50% { opacity: 0.55; transform: scale(0.86); } }
.orbit__ring { position: absolute; border: 1px solid var(--border-2); border-radius: 50%; }
.orbit__ring::after { content: ""; position: absolute; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px rgba(45, 212, 191, 0.7); top: -4.5px; left: calc(50% - 4px); }
.orbit__ring--1 { width: 46%; height: 46%; border-color: rgba(45, 212, 191, 0.26); animation: spin 16s linear infinite; }
.orbit__ring--2 { width: 70%; height: 70%; border-color: rgba(45, 212, 191, 0.16); border-style: dashed; animation: spin 26s linear infinite reverse; }
.orbit__ring--3 { width: 100%; height: 100%; border-color: rgba(255, 255, 255, 0.08); animation: spin 44s linear infinite; }
.orbit__ring--3::after { width: 6px; height: 6px; top: -3.5px; left: calc(50% - 3px); }
@keyframes spin { to { transform: rotate(360deg); } }

/* 关键词跑马灯(克制) */
.marquee { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); overflow: hidden; background: rgba(255, 255, 255, 0.012); }
.marquee__track { display: flex; gap: 0; padding: 15px 0; width: max-content; animation: scroll 44s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee span { color: var(--muted-2); font-size: 13px; font-weight: 600; letter-spacing: 0.04em; padding: 0 26px; display: inline-flex; align-items: center; }
.marquee span::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: rgba(45, 212, 191, 0.55); margin-right: 26px; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* ============================================================
   服务卡片(首页)
   ============================================================ */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card { position: relative; padding: 34px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); overflow: hidden; transition: transform 0.45s var(--ease), border-color 0.45s, background 0.45s; }
.card::before { content: ""; position: absolute; inset: 0; background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 0%), rgba(45, 212, 191, 0.08), transparent 60%); opacity: 0; transition: opacity 0.4s; }
.card::after { content: ""; position: absolute; left: 0; top: 0; height: 1px; width: 100%; background: var(--accent-line); opacity: 0; transition: opacity 0.45s; }
.card:hover { transform: translateY(-5px); border-color: rgba(45, 212, 191, 0.3); background: var(--surface-2); }
.card:hover::before, .card:hover::after { opacity: 1; }
.card__num { position: absolute; top: 28px; right: 30px; font-family: "Sora", var(--font-cjk); font-size: 14px; font-weight: 600; color: var(--muted-2); letter-spacing: 0.08em; }
.card__icon { width: 50px; height: 50px; border-radius: 13px; display: grid; place-items: center; background: var(--accent-soft); border: 1px solid rgba(45, 212, 191, 0.18); margin-bottom: 22px; color: var(--accent); }
.card__icon svg { width: 25px; height: 25px; }
.card h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.card__tag { font-family: "Sora", var(--font-cjk); font-size: 12px; color: var(--muted); font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 14px; }
.card p { color: var(--muted); font-size: 14.5px; font-weight: 600; margin-bottom: 22px; line-height: 1.75; }
.card__link { position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 7px; font-weight: 600; font-size: 14px; color: var(--text); }
.card:hover .card__link { color: var(--accent); }
.card__link svg { width: 15px; transition: transform 0.35s var(--ease); }
.card:hover .card__link svg { transform: translateX(5px); }

/* ============================================================
   为什么选海龟(编辑式分隔行 · 打破卡片单调)
   ============================================================ */
.rows { border-top: 1px solid var(--border); }
.row { display: grid; grid-template-columns: 72px 56px 1fr; align-items: start; gap: 26px; padding: 30px 8px; border-bottom: 1px solid var(--border); transition: background 0.4s var(--ease), padding 0.4s var(--ease); }
.row:hover { background: var(--surface); padding-left: 18px; }
.row__idx { font-family: "Sora", var(--font-cjk); font-size: 30px; font-weight: 700; color: var(--muted-2); letter-spacing: -0.02em; line-height: 1; transition: color 0.4s; }
.row:hover .row__idx { color: var(--accent); }
.row__ic { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--accent-soft); border: 1px solid rgba(45, 212, 191, 0.18); color: var(--accent); }
.row__ic svg { width: 22px; height: 22px; }
.row__body { max-width: 640px; }
.row__body h3 { font-size: 19px; font-weight: 600; margin-bottom: 8px; }
.row__body p { color: var(--muted); font-size: 15px; font-weight: 600; line-height: 1.72; }

/* ============================================================
   流程 / 步骤(连线时间轴)
   ============================================================ */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; position: relative; }
.steps::before { content: ""; position: absolute; top: 44px; left: 8%; right: 8%; height: 1px; background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.28), rgba(45, 212, 191, 0.28), transparent); z-index: 0; }
.step { position: relative; padding: 30px 24px 26px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg-2); z-index: 1; transition: border-color 0.4s, transform 0.4s var(--ease); }
.step:hover { border-color: rgba(45, 212, 191, 0.3); transform: translateY(-4px); }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: "Sora", var(--font-cjk); font-size: 13px; font-weight: 700; color: var(--accent); letter-spacing: 0.08em; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--accent-soft); border: 1px solid rgba(45, 212, 191, 0.3); margin-bottom: 18px; }
.step h3 { font-size: 16.5px; font-weight: 600; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 13.5px; font-weight: 600; line-height: 1.66; }

/* ============================================================
   子页面
   ============================================================ */
.page-hero { padding: 60px 0 24px; }
.page-hero .crumb { font-family: "Sora", var(--font-cjk); color: var(--muted-2); font-size: 13px; letter-spacing: 0.04em; margin-bottom: 26px; }
.page-hero .crumb a:hover { color: var(--accent); }
.page-hero .eyebrow { margin-bottom: 22px; }
.page-hero h1 { font-size: clamp(31px, 4.6vw, 52px); font-weight: 700; letter-spacing: -0.035em; line-height: 1.12; margin-bottom: 22px; }
.page-hero .lead { font-size: clamp(16px, 1.7vw, 19px); color: var(--muted); font-weight: 600; max-width: 700px; line-height: 1.8; }
.page-hero .lead b { color: var(--text-2); font-weight: inherit; }

/* GEO 定义块 */
.define { margin-top: 40px; padding: 30px 34px; border-radius: var(--radius); border: 1px solid var(--border-2); background: linear-gradient(120deg, rgba(45, 212, 191, 0.06), rgba(45, 212, 191, 0.02)); position: relative; overflow: hidden; }
.define::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--accent); }
.define .k { font-family: "Sora", var(--font-cjk); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
.define p { font-size: 16px; color: var(--text-2); font-weight: 600; line-height: 1.8; }
.define p b { color: var(--text); font-weight: inherit; }

.split { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.panel { padding: 34px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); transition: border-color 0.4s; }
.panel:hover { border-color: var(--border-2); }
.panel h3 { font-size: 19px; font-weight: 600; margin-bottom: 18px; display: flex; align-items: center; gap: 11px; }
.panel h3 .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex-shrink: 0; box-shadow: 0 0 0 4px var(--accent-soft); }
.panel > p { color: var(--muted); font-weight: 600; font-size: 14.5px; line-height: 1.7; margin-bottom: 16px; }

.checklist li { display: flex; gap: 12px; align-items: flex-start; padding: 13px 0; border-bottom: 1px solid var(--border); color: var(--text-2); font-size: 14.5px; font-weight: 600; }
.checklist li:last-child { border-bottom: none; }
.checklist li b { color: var(--text); font-weight: inherit; }
.checklist svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 2px; color: var(--accent); }

.feature-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-row .fi { position: relative; padding: 28px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); overflow: hidden; transition: border-color 0.4s, transform 0.4s var(--ease), background 0.4s; }
.feature-row .fi::after { content: ""; position: absolute; left: 0; top: 0; height: 1px; width: 100%; background: var(--accent-line); opacity: 0; transition: opacity 0.4s; }
.feature-row .fi:hover { border-color: rgba(45, 212, 191, 0.28); transform: translateY(-4px); background: var(--surface-2); }
.feature-row .fi:hover::after { opacity: 1; }
.feature-row .fi .ic { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: var(--accent-soft); border: 1px solid rgba(45, 212, 191, 0.18); color: var(--accent); margin-bottom: 18px; }
.feature-row .fi .ic svg { width: 21px; height: 21px; }
.feature-row .fi h3 { font-size: 17px; font-weight: 600; margin-bottom: 9px; }
.feature-row .fi p { color: var(--muted); font-size: 13.5px; font-weight: 600; line-height: 1.72; }

.callout { padding: 24px 28px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); color: var(--text-2); font-size: 14.5px; font-weight: 600; line-height: 1.75; }
.callout b { color: var(--accent); font-weight: inherit; }

/* FAQ 手风琴 */
.faq { max-width: 840px; }
.faq__item { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); margin-bottom: 12px; transition: border-color 0.3s; }
.faq__item[open] { border-color: var(--border-2); }
.faq__item summary { list-style: none; cursor: pointer; padding: 22px 26px; display: flex; align-items: center; justify-content: space-between; gap: 18px; font-size: 16px; font-weight: 600; color: var(--text); transition: color 0.25s; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary:hover { color: var(--accent-bright); }
.faq__item summary::after { content: ""; flex-shrink: 0; width: 10px; height: 10px; border-right: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(45deg); transition: transform 0.3s var(--ease); margin-top: -4px; }
.faq__item[open] summary::after { transform: rotate(-135deg); margin-top: 3px; }
.faq__a { padding: 0 26px 24px; color: var(--text-2); font-size: 14.5px; font-weight: 600; line-height: 1.78; }
.faq__a b { color: var(--accent); font-weight: inherit; }

/* CTA 带 */
.cta-band { position: relative; overflow: hidden; text-align: center; padding: 74px 40px; border-radius: 24px; margin: 24px 0; border: 1px solid var(--border-2); background: linear-gradient(135deg, rgba(45, 212, 191, 0.08), rgba(18, 165, 148, 0.03)); }
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(560px circle at 50% -30%, rgba(45, 212, 191, 0.14), transparent 60%); pointer-events: none; }
.cta-band h2 { font-size: clamp(25px, 3.4vw, 39px); font-weight: 700; letter-spacing: -0.025em; margin-bottom: 15px; position: relative; }
.cta-band p { color: var(--muted); font-weight: 600; max-width: 540px; margin: 0 auto 30px; position: relative; line-height: 1.7; }
.cta-band .btn { position: relative; }

/* ============================================================
   微信弹窗
   ============================================================ */
.modal { position: fixed; inset: 0; z-index: 200; display: none; place-items: center; padding: 24px; }
.modal.open { display: grid; }
.modal__bg { position: absolute; inset: 0; background: rgba(3, 4, 8, 0.82); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); animation: fade 0.3s; }
@keyframes fade { from { opacity: 0; } }
.modal__box { position: relative; width: 100%; max-width: 372px; text-align: center; padding: 42px 36px; border-radius: 22px; background: linear-gradient(165deg, #0e1219, #090b11); border: 1px solid var(--border-2); box-shadow: 0 40px 90px rgba(0, 0, 0, 0.6); animation: pop 0.45s var(--ease); }
@keyframes pop { from { opacity: 0; transform: translateY(18px) scale(0.97); } }
.modal__box .eyebrow { justify-content: center; margin-bottom: 18px; }
.modal__box h3 { font-size: 22px; font-weight: 600; margin-bottom: 8px; }
.modal__box p { color: var(--muted); font-size: 14.5px; font-weight: 600; margin-bottom: 26px; }
.qr { position: relative; width: 210px; height: 268px; margin: 0 auto 22px; border-radius: 16px; border: 1px solid var(--border-2); background: rgba(255, 255, 255, 0.02); overflow: hidden; color: var(--muted-2); font-size: 13px; font-weight: 600; }
.qr__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: #fff; }
.qr__inner { position: absolute; inset: 0; display: none; place-items: center; align-content: center; text-align: center; padding: 12px; }
.qr--empty .qr__inner { display: grid; }
.qr svg { width: 40px; height: 40px; opacity: 0.5; margin-bottom: 8px; }
.wx-id { font-size: 15px; color: var(--muted); font-weight: 600; }
.wx-id b { font-family: "Sora", var(--font-cjk); color: var(--accent); font-weight: 600; margin-left: 4px; letter-spacing: 0.02em; }
.wx-note { margin-top: 16px; font-size: 12.5px; color: var(--muted-2); line-height: 1.6; }
.wx-tags { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-top: 9px; }
.wx-tags i { font-style: normal; font-size: 11.5px; color: var(--accent); padding: 3px 10px; border-radius: 999px; border: 1px solid rgba(45, 212, 191, 0.24); background: var(--accent-soft); letter-spacing: 0.03em; }
.modal__close { position: absolute; top: 16px; right: 16px; width: 34px; height: 34px; border-radius: 9px; border: 1px solid var(--border); background: none; color: var(--muted); cursor: pointer; font-size: 16px; transition: color 0.25s, border-color 0.25s; }
.modal__close:hover { color: var(--text); border-color: var(--border-2); }

/* ============================================================
   页脚
   ============================================================ */
.footer { border-top: 1px solid var(--border); margin-top: 48px; padding: 64px 0 36px; }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 44px; margin-bottom: 48px; }
.footer .brand { margin: 0 0 20px; }
.footer__slogan { color: var(--accent); font-weight: 600; font-size: 15px; margin-bottom: 12px; }
.footer__about { color: var(--muted); font-size: 14.5px; font-weight: 600; max-width: 320px; line-height: 1.75; }
.footer__col h4 { font-family: "Sora", var(--font-cjk); font-size: 12px; color: var(--muted-2); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 18px; font-weight: 600; }
.footer__col a, .footer__col p { display: block; color: var(--muted); font-size: 14.5px; font-weight: 600; padding: 7px 0; cursor: pointer; transition: color 0.25s; }
.footer__col a:hover { color: var(--accent); }
.footer__bottom { border-top: 1px solid var(--border); padding-top: 26px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--muted-2); font-size: 13px; font-weight: 600; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .orbit { display: none; }
  .cards, .why, .split, .feature-row, .footer__grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .steps::before { display: none; }
  .row { grid-template-columns: 46px 1fr; gap: 18px; }
  .row__idx { grid-row: 1; font-size: 24px; }
  .row__ic { display: none; }
  .nav__links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: rgba(9, 11, 17, 0.98); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid var(--border); padding: 12px; }
  .nav__links.open { display: flex; }
  .nav__links a { padding: 14px; }
  .nav .btn--sm { display: none; }
  .nav__toggle { display: inline-flex; }
  .section-pad { padding: 78px 0; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .hero__stats { gap: 26px; }
  .cta-band { padding: 48px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   FLORIA 风格首页 v4 · 深海光影 · 图为主 · 编辑式
   仅作用于首页新结构(fx- 前缀),不影响子页旧组件
   ============================================================ */
.fx-eyebrow { font-family: "Sora", var(--font-cjk); font-size: 11.5px; font-weight: 600; letter-spacing: 0.24em; text-transform: uppercase; color: var(--accent); }
.fx-textlink { display: inline-flex; align-items: center; gap: 7px; color: var(--text); font-weight: 600; font-size: 14.5px; border-bottom: 1px solid rgba(255, 255, 255, 0.26); padding-bottom: 3px; transition: border-color 0.3s, color 0.3s; }
.fx-textlink:hover { color: var(--accent); border-color: var(--accent); }

/* 轻字重编辑体大标题(放开 600 限制,做字重对比) */
.fx-display { font-weight: 300; letter-spacing: -0.035em; line-height: 1.05; color: var(--text); }
.fx-display em { font-style: normal; font-weight: 600; color: var(--accent); }

/* HERO 全屏大图 */
.fx-hero { position: relative; isolation: isolate; min-height: 100dvh; margin-top: -72px; display: flex; align-items: flex-end; overflow: hidden; }
.fx-hero__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; animation: kenburns 28s var(--ease) infinite alternate; }
@keyframes kenburns { from { transform: scale(1.03); } to { transform: scale(1.13); } }
.fx-hero__scrim { position: absolute; inset: 0; background:
  linear-gradient(to top, rgba(4, 6, 9, 0.95) 1%, rgba(4, 6, 9, 0.5) 34%, rgba(4, 6, 9, 0.22) 60%, rgba(4, 6, 9, 0.5) 100%),
  radial-gradient(130% 90% at 12% 96%, rgba(4, 6, 9, 0.72), transparent 58%); }
.fx-hero__inner { position: relative; z-index: 1; width: 100%; padding-top: 140px; padding-bottom: clamp(58px, 9vh, 112px); }
.fx-hero .fx-eyebrow { display: block; margin-bottom: 26px; }
.fx-hero h1 { font-size: clamp(46px, 8.4vw, 104px); margin-bottom: 30px; max-width: 13ch; }
.fx-lead { font-size: clamp(16px, 1.6vw, 19px); color: var(--text-2); font-weight: 600; max-width: 520px; line-height: 1.75; margin-bottom: 38px; }
.fx-hero__cta { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.fx-scrollcue { position: absolute; right: 32px; bottom: 34px; z-index: 1; writing-mode: vertical-rl; font-family: "Sora", var(--font-cjk); font-size: 11px; letter-spacing: 0.28em; text-transform: uppercase; color: var(--muted); }

/* 编辑式区块头 */
.fx-sec { padding: clamp(88px, 13vh, 158px) 0; }
.fx-head { max-width: 780px; margin-bottom: 62px; }
.fx-head .fx-eyebrow { display: block; margin-bottom: 22px; }
.fx-head h2 { font-size: clamp(31px, 4.8vw, 56px); font-weight: 300; letter-spacing: -0.035em; line-height: 1.08; color: var(--text); }
.fx-head h2 em { font-style: normal; font-weight: 600; color: var(--accent); }
.fx-head p { color: var(--muted); font-size: 17px; font-weight: 600; line-height: 1.7; margin-top: 22px; max-width: 580px; }

/* 服务图片瓦片(编辑式非对称网格) */
.fx-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 22px; }
.fx-tile { position: relative; isolation: isolate; overflow: hidden; border-radius: 20px; aspect-ratio: 16 / 11; grid-column: span 6; }
.fx-tile--l { grid-column: span 7; }
.fx-tile--s { grid-column: span 5; }
.fx-tile__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.fx-tile__scrim { position: absolute; inset: 0; background: linear-gradient(to top, rgba(4, 6, 9, 0.93) 4%, rgba(4, 6, 9, 0.34) 50%, rgba(4, 6, 9, 0.12)); transition: background 0.5s; }
.fx-tile:hover .fx-tile__img { transform: scale(1.06); }
.fx-tile:hover .fx-tile__scrim { background: linear-gradient(to top, rgba(4, 6, 9, 0.95) 4%, rgba(6, 30, 27, 0.4) 52%, rgba(4, 6, 9, 0.12)); }
.fx-tile__body { position: absolute; left: 0; bottom: 0; width: 100%; padding: clamp(26px, 3vw, 38px); }
.fx-tile__n { font-family: "Sora", var(--font-cjk); font-size: 12.5px; font-weight: 600; letter-spacing: 0.14em; color: var(--accent); }
.fx-tile__tag { font-size: 12px; color: var(--text-2); font-weight: 600; letter-spacing: 0.05em; margin-bottom: 6px; }
.fx-tile h3 { font-size: clamp(21px, 2.3vw, 28px); font-weight: 600; color: #fff; margin: 12px 0 10px; letter-spacing: -0.02em; }
.fx-tile p { color: var(--text-2); font-size: 14px; font-weight: 600; line-height: 1.6; max-width: 40ch; }
.fx-tile__go { display: inline-flex; align-items: center; gap: 8px; margin-top: 18px; color: #fff; font-weight: 600; font-size: 13.5px; }
.fx-tile__go svg { width: 15px; transition: transform 0.35s var(--ease); }
.fx-tile:hover .fx-tile__go { color: var(--accent); }
.fx-tile:hover .fx-tile__go svg { transform: translateX(5px); }

/* 全屏陈述带 */
.fx-statement { position: relative; isolation: isolate; overflow: hidden; padding: clamp(112px, 18vh, 200px) 0; }
.fx-statement__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.fx-statement__scrim { position: absolute; inset: 0; background: linear-gradient(118deg, rgba(4, 6, 9, 0.93), rgba(4, 6, 9, 0.62) 54%, rgba(4, 6, 9, 0.84)); }
.fx-statement__inner { position: relative; z-index: 1; }
.fx-statement q { display: block; quotes: none; font-size: clamp(26px, 4vw, 47px); font-weight: 300; line-height: 1.24; letter-spacing: -0.025em; color: var(--text); max-width: 21ch; }
.fx-statement q b { font-weight: 600; color: var(--accent); }
.fx-pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 68px; max-width: 900px; }
.fx-pillar { border-top: 1px solid var(--border-2); padding-top: 22px; }
.fx-pillar h4 { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.fx-pillar p { color: var(--muted); font-size: 14px; font-weight: 600; line-height: 1.66; }

/* 编辑式流程 */
.fx-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.fx-step { padding: 4px 30px; border-left: 1px solid var(--border); }
.fx-step:first-child { padding-left: 0; border-left: none; }
.fx-step__n { font-family: "Sora", var(--font-cjk); font-size: 14px; font-weight: 600; color: var(--accent); letter-spacing: 0.1em; }
.fx-step h3 { font-size: 19px; font-weight: 600; color: var(--text); margin: 20px 0 10px; }
.fx-step p { color: var(--muted); font-size: 14px; font-weight: 600; line-height: 1.66; }

/* 首页 CTA(编辑式,更大更空) */
.fx-cta { text-align: center; padding: clamp(96px, 16vh, 180px) 0; }
.fx-cta h2 { font-size: clamp(30px, 5vw, 58px); font-weight: 300; letter-spacing: -0.035em; line-height: 1.1; color: var(--text); margin-bottom: 22px; }
.fx-cta h2 em { font-style: normal; font-weight: 600; color: var(--accent); }
.fx-cta p { color: var(--muted); font-size: 17px; font-weight: 600; max-width: 500px; margin: 0 auto 38px; line-height: 1.7; }

@media (max-width: 900px) {
  .fx-grid { grid-template-columns: 1fr; }
  .fx-tile, .fx-tile--l, .fx-tile--s { grid-column: 1 / -1; }
  .fx-pillars { grid-template-columns: 1fr; gap: 0; margin-top: 44px; }
  .fx-pillar { border-top: none; border-bottom: 1px solid var(--border); padding: 20px 0; }
  .fx-pillar:last-child { border-bottom: none; }
  .fx-steps { grid-template-columns: 1fr 1fr; gap: 40px 0; }
  .fx-step { padding: 4px 24px; }
  .fx-step:nth-child(odd) { padding-left: 0; border-left: none; }
  .fx-hero__inner { padding-top: 122px; }
  .fx-scrollcue { display: none; }
}
@media (max-width: 560px) {
  .fx-steps { grid-template-columns: 1fr; }
  .fx-step, .fx-step:nth-child(odd) { padding: 4px 0 4px 20px; border-left: 1px solid var(--border); }
}

/* ---------- 子页 · 图片页头 + 编辑式化 ---------- */
.fx-subhero { position: relative; isolation: isolate; overflow: hidden; min-height: clamp(430px, 62vh, 600px); margin-top: -72px; display: flex; align-items: flex-end; }
.fx-subhero__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; animation: kenburns 30s var(--ease) infinite alternate; }
.fx-subhero__scrim { position: absolute; inset: 0; background: linear-gradient(to top, rgba(4, 6, 9, 0.96) 2%, rgba(4, 6, 9, 0.55) 34%, rgba(4, 6, 9, 0.28) 62%, rgba(4, 6, 9, 0.56) 100%); }
.fx-subhero__inner { position: relative; z-index: 1; width: 100%; padding-top: 150px; padding-bottom: clamp(46px, 7vh, 86px); }
.fx-subhero .crumb { font-family: "Sora", var(--font-cjk); color: var(--text-2); font-size: 13px; letter-spacing: 0.04em; margin-bottom: 24px; }
.fx-subhero .crumb a:hover { color: var(--accent); }
.fx-subhero .fx-eyebrow { display: block; margin-bottom: 20px; }
.fx-subhero h1 { font-size: clamp(34px, 6vw, 74px); font-weight: 300; letter-spacing: -0.035em; line-height: 1.06; color: var(--text); margin-bottom: 22px; }
.fx-subhero h1 em, .fx-subhero h1 .gradient-text { font-style: normal; font-weight: 600; color: var(--accent); }
.fx-subhero .lead { font-size: clamp(16px, 1.7vw, 19px); color: var(--text-2); font-weight: 600; max-width: 660px; line-height: 1.75; }
.fx-subhero .lead b { color: #fff; font-weight: inherit; }

/* 把子页仍在用的共享区块头/CTA 编辑式化(轻标题 + 加粗青绿重点) */
.section-head h2 { font-weight: 300; font-size: clamp(28px, 4.2vw, 50px); }
.section-head h2 .gradient-text { font-weight: 600; }
.cta-band h2 { font-weight: 300; }
.cta-band h2 .gradient-text { font-weight: 600; }
.cta-band { padding: clamp(64px, 10vh, 96px) 40px; }

/* GEO 定义块:出了 hero 后独立成块 */
.define--solo { max-width: var(--maxw); margin: 0 auto; }