/* ==========================================================================
   崇左山泉吊水鱼 · Landing Page
   设计令牌 → 基础样式 → 组件 → 区块 → 响应式 → 无障碍降级
   ========================================================================== */

/* ------------------------------ 1. 设计令牌 ------------------------------ */
:root {
  /* 深邃水色 */
  --deep-900: #0A192F;
  --deep-800: #0D253F;
  --deep-700: #112E4D;
  --deep-600: #17395C;

  /* 晶莹冰蓝 */
  --spring: #38BDF8;
  --spring-light: #7DD3FC;
  --spring-pale: #DFF6FF;

  /* 翡翠山绿 / 香槟金 */
  --emerald: #059669;
  --emerald-light: #34D399;
  --gold: #F59E0B;

  /* 文本 */
  --text: #E8F3FF;
  --text-soft: #B9D3EA;
  --text-muted: #7F9DBB;

  /* 表面 */
  --glass-bg: rgba(20, 46, 74, 0.42);
  --glass-bg-strong: rgba(11, 32, 55, 0.72);
  --glass-border: rgba(125, 211, 252, 0.18);
  --glass-border-strong: rgba(125, 211, 252, 0.34);

  /* 阴影 / 圆角 */
  --shadow-sm: 0 4px 18px rgba(2, 12, 24, 0.35);
  --shadow-md: 0 18px 48px rgba(2, 12, 24, 0.45);
  --shadow-lg: 0 32px 80px rgba(2, 12, 24, 0.55);
  --glow-spring: 0 0 0 1px rgba(56, 189, 248, 0.35), 0 10px 40px rgba(56, 189, 248, 0.25);
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;

  /* 布局 */
  --container: 1200px;
  --nav-h: 72px;

  /* 字体 */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", Georgia, serif;
}

/* ------------------------------ 2. 基础样式 ------------------------------ */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: linear-gradient(180deg, var(--deep-900) 0%, #081527 45%, #0A192F 100%);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.no-scroll { overflow: hidden; }
body.no-select-drag { user-select: none; -webkit-user-select: none; }

img, svg, canvas { display: block; max-width: 100%; }
svg { overflow: visible; }

h1, h2, h3, h4 {
  margin: 0 0 .6em;
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: .01em;
}
p { margin: 0 0 1em; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
b, strong { font-weight: 700; }
small { font-size: .84em; }

::selection { background: rgba(56, 189, 248, .32); color: #fff; }

:focus-visible {
  outline: 2px solid var(--spring-light);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--spring);
  color: #04202F;
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  font-weight: 700;
  transition: top .2s ease;
}
.skip-link:focus { top: 0; }

/* ------------------------------ 3. 工具类 ------------------------------ */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-lg);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow-md);
}

.card { padding: 30px; }

.text-grad {
  background: linear-gradient(100deg, var(--spring-light) 0%, var(--spring) 42%, var(--emerald-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  margin: 0 0 14px;
  font-size: .78rem;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--spring-light);
  font-weight: 600;
}

/* 按钮 */
.btn {
  --btn-bg: transparent;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 700;
  cursor: pointer;
  background: var(--btn-bg);
  color: var(--text);
  transition: transform .25s cubic-bezier(.22,1,.36,1), box-shadow .25s ease, background-color .25s ease, border-color .25s ease, color .25s ease;
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-sm { padding: 9px 18px; font-size: .85rem; }
.btn-lg { padding: 16px 34px; font-size: 1.02rem; }
.btn-block { width: 100%; }

.btn-primary {
  --btn-bg: linear-gradient(100deg, var(--spring-light), var(--spring) 55%, #2A9FD6);
  color: #04222F;
  box-shadow: 0 14px 40px rgba(56, 189, 248, .32);
}
.btn-primary:hover { box-shadow: 0 18px 52px rgba(56, 189, 248, .48); }

.btn-gold {
  --btn-bg: linear-gradient(100deg, #FCD34D, var(--gold));
  color: #3B2503;
  box-shadow: 0 12px 34px rgba(245, 158, 11, .28);
}
.btn-gold:hover { box-shadow: 0 18px 46px rgba(245, 158, 11, .42); }

.btn-ghost {
  border-color: var(--glass-border-strong);
  background: rgba(125, 211, 252, .06);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(125, 211, 252, .14); }

.btn-outline {
  border-color: var(--spring);
  color: var(--spring-light);
  background: rgba(56, 189, 248, .06);
}
.btn-outline:hover { background: rgba(56, 189, 248, .16); color: #fff; }

/* 标签 / 列表 */
.tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .04em;
  border: 1px solid transparent;
}
.tag-gold { background: rgba(245, 158, 11, .14); border-color: rgba(245, 158, 11, .45); color: #FCD34D; }
.tag-spring { background: rgba(56, 189, 248, .14); border-color: rgba(56, 189, 248, .45); color: var(--spring-light); }

.tick-list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 8px;
  color: var(--text-soft);
  font-size: .94rem;
}
.tick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 14px;
  height: 8px;
  border-left: 2px solid var(--spring);
  border-bottom: 2px solid var(--spring);
  transform: rotate(-45deg);
}
.tick-list-lg li { font-size: 1rem; margin-bottom: 12px; }

.pill {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 700;
}
.pill-emerald { background: rgba(5, 150, 105, .18); border: 1px solid rgba(52, 211, 153, .45); color: var(--emerald-light); }

/* 区块标题 */
.section {
  position: relative;
  padding: 118px 0;
}
.section-head { max-width: 780px; margin: 0 auto 56px; text-align: center; }
.section-title {
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  font-family: var(--font-serif);
  font-weight: 700;
}
.section-desc { color: var(--text-soft); font-size: 1.02rem; margin-bottom: 0; }
.section-desc b { color: var(--spring-light); }

.br-desktop { display: inline; }

/* ------------------------------ 4. Header ------------------------------ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background-color .3s ease, box-shadow .3s ease, backdrop-filter .3s ease;
}
.site-header.is-stuck {
  background: rgba(8, 21, 39, .72);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  box-shadow: 0 10px 40px rgba(2, 12, 24, .45);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
}
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.brand-mark { width: 42px; height: 42px; flex: 0 0 auto; filter: drop-shadow(0 0 12px rgba(56, 189, 248, .35)); }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 1.06rem; letter-spacing: .06em; }
.brand-text em {
  font-style: normal;
  font-size: .64rem;
  letter-spacing: .18em;
  color: var(--text-muted);
}

.primary-nav { display: flex; gap: 4px; }
.primary-nav a {
  position: relative;
  padding: 8px 14px;
  font-size: .93rem;
  color: var(--text-soft);
  border-radius: 999px;
  transition: color .25s ease, background-color .25s ease;
}
.primary-nav a:hover, .primary-nav a.is-active { color: #fff; background: rgba(125, 211, 252, .1); }
.primary-nav a.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--spring);
  transform: translateX(-50%);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 11px 9px;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  background: rgba(125, 211, 252, .06);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform .3s ease, opacity .2s ease;
}
.nav-toggle span + span { margin-top: 5px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------------ 5. Hero ------------------------------ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}
#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
}
.hero-fallback {
  position: absolute;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(120% 80% at 20% 10%, rgba(56, 189, 248, .30), transparent 60%),
    radial-gradient(90% 70% at 80% 20%, rgba(16, 185, 129, .18), transparent 62%),
    linear-gradient(180deg, #0D253F, #0A192F 70%);
  opacity: 0;
  transition: opacity .6s ease;
}
.hero-fallback::after {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    repeating-linear-gradient(100deg, rgba(125, 211, 252, .07) 0 2px, transparent 2px 90px),
    repeating-linear-gradient(80deg, rgba(125, 211, 252, .05) 0 2px, transparent 2px 130px);
  animation: driftFallback 24s linear infinite;
}
.hero.no-webgl .hero-fallback { opacity: 1; }

@keyframes driftFallback {
  from { transform: translate3d(0, 0, 0) scale(1.05); }
  to { transform: translate3d(-6%, -4%, 0) scale(1.05); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(70% 50% at 50% 40%, rgba(10, 25, 47, 0) 0%, rgba(10, 25, 47, .55) 70%, rgba(10, 25, 47, .92) 100%),
    linear-gradient(180deg, rgba(10, 25, 47, .55) 0%, rgba(10, 25, 47, 0) 30%, rgba(10, 25, 47, .85) 100%);
  pointer-events: none;
}

.hero-content { position: relative; padding-top: 92px; padding-bottom: 96px; }
.hero-eyebrow {
  margin-bottom: 20px;
  font-size: .82rem;
  letter-spacing: .26em;
  color: var(--spring-light);
  text-transform: uppercase;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  line-height: 1.16;
  margin-bottom: 24px;
  text-shadow: 0 18px 60px rgba(3, 14, 28, .6);
}
.hero-sub {
  max-width: 640px;
  font-size: clamp(1rem, 1.6vw, 1.16rem);
  color: var(--text-soft);
  margin-bottom: 28px;
}

.badges { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: .88rem;
  font-weight: 600;
  background: rgba(11, 32, 55, .55);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.badge .dot { width: 8px; height: 8px; border-radius: 50%; }
.badge-spring { border-color: rgba(56, 189, 248, .4); }
.badge-spring .dot { background: var(--spring); box-shadow: 0 0 12px var(--spring); }
.badge-emerald { border-color: rgba(52, 211, 153, .4); }
.badge-emerald .dot { background: var(--emerald-light); box-shadow: 0 0 12px var(--emerald-light); }
.badge-gold { border-color: rgba(245, 158, 11, .42); }
.badge-gold .dot { background: var(--gold); box-shadow: 0 0 12px var(--gold); }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 52px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  max-width: 660px;
  padding: 22px 26px;
  border-radius: var(--r-md);
  background: rgba(11, 32, 55, .42);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.hero-stats dt { font-size: .8rem; color: var(--text-muted); letter-spacing: .08em; }
.hero-stats dd { display: flex; align-items: baseline; gap: 2px; }
.hero-stats .num {
  font-size: 1.7rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--spring-light);
}
.hero-stats .sym { font-size: 1.4rem; font-weight: 700; color: var(--spring-light); }
.hero-stats .unit { font-size: .82rem; color: var(--text-muted); margin-left: 4px; }

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: .74rem;
  letter-spacing: .2em;
  color: var(--text-muted);
  pointer-events: none;
}
.scroll-hint i {
  width: 1px;
  height: 46px;
  background: linear-gradient(180deg, var(--spring-light), transparent);
  animation: hintDrop 2.2s ease-in-out infinite;
}
@keyframes hintDrop {
  0%, 100% { transform: scaleY(.35); opacity: .4; transform-origin: top; }
  50% { transform: scaleY(1); opacity: 1; transform-origin: top; }
}
.hero-hint {
  position: absolute;
  right: 28px;
  bottom: 34px;
  margin: 0;
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--text-muted);
  pointer-events: none;
}

/* ------------------------------ 6. 无螺生态 ------------------------------ */
.section-eco { background: linear-gradient(180deg, #081527 0%, #0A192F 60%); }

/* 科普寄生链 */
.chain {
  padding: 34px 28px;
  margin-bottom: 48px;
  border-radius: var(--r-lg);
  border: 1px solid var(--glass-border);
  background: linear-gradient(140deg, rgba(17, 46, 77, .5), rgba(10, 25, 47, .7));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.chain-row {
  display: flex;
  align-items: stretch;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}
.chain-node {
  flex: 1 1 0;
  min-width: 150px;
  padding: 22px 18px;
  border-radius: var(--r-md);
  text-align: center;
  background: rgba(11, 32, 55, .6);
  border: 1px solid var(--glass-border);
  transition: transform .3s ease, border-color .3s ease;
}
.chain-node:hover { transform: translateY(-4px); border-color: var(--glass-border-strong); }
.chain-node b { display: block; font-size: 1rem; margin-bottom: 4px; }
.chain-node small { color: var(--text-muted); font-size: .78rem; }
.chain-icon {
  display: block;
  width: 46px;
  height: 46px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: rgba(56, 189, 248, .12);
  border: 1px solid rgba(125, 211, 252, .35);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 26px 26px;
}
.chain-icon[data-icon="egg"] { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cellipse cx='12' cy='13' rx='6' ry='8' fill='none' stroke='%237DD3FC' stroke-width='1.6'/%3E%3Cpath d='M9 11h6M9 15h6' stroke='%237DD3FC' stroke-width='1.4'/%3E%3C/svg%3E"); }
.chain-icon[data-icon="snail"] { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 18a5 5 0 1 1 10 0z' fill='none' stroke='%237DD3FC' stroke-width='1.6'/%3E%3Cpath d='M15 18c2-2 4-2 5 0M19 18v-4' stroke='%237DD3FC' stroke-width='1.6'/%3E%3C/svg%3E"); }
.chain-icon[data-icon="larva"] { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12c2-5 8-5 8 0s-6 5-8 0z' fill='none' stroke='%237DD3FC' stroke-width='1.6'/%3E%3Cpath d='M14 12l5-3M14 12l5 3' stroke='%237DD3FC' stroke-width='1.6'/%3E%3C/svg%3E"); }
.chain-icon[data-icon="fish"] { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M8 12c3-6 9-6 12 0-3 6-9 6-12 0z' fill='none' stroke='%237DD3FC' stroke-width='1.6'/%3E%3Cpath d='M20 12l3-3v6z' fill='none' stroke='%237DD3FC' stroke-width='1.6'/%3E%3C/svg%3E"); }

.chain-node.node-blocked {
  position: relative;
  border-color: rgba(245, 158, 11, .5);
  background: rgba(245, 158, 11, .08);
}
.chain-node.node-blocked::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--r-md);
  background: repeating-linear-gradient(45deg, rgba(245, 158, 11, .06) 0 8px, transparent 8px 16px);
  pointer-events: none;
}
.strike-tag {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  padding: 2px 12px;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 700;
  white-space: nowrap;
  background: var(--gold);
  color: #3B2503;
}
.chain-link {
  flex: 0 0 42px;
  align-self: center;
  height: 2px;
  border-radius: 2px;
  background: rgba(125, 211, 252, .35);
  position: relative;
}
.chain-link.link-dead {
  background: repeating-linear-gradient(90deg, rgba(148, 163, 184, .35) 0 6px, transparent 6px 12px);
}
.chain-conclusion {
  margin: 22px 0 0;
  padding-top: 20px;
  border-top: 1px dashed rgba(125, 211, 252, .22);
  color: var(--text-soft);
  font-size: .98rem;
}

/* 透视镜 */
.inspector { padding: 26px; margin-bottom: 48px; }
.inspector-head { margin-bottom: 18px; }
.inspector-head h3 { font-size: 1.28rem; margin-bottom: 4px; }
.inspector-head p { margin: 0; color: var(--text-muted); font-size: .92rem; }

.inspector-scene {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-md);
  overflow: hidden;
  cursor: none;
  touch-action: pan-y;
  background: var(--deep-800);
}
.ins-layer { position: absolute; inset: 0; }
.ins-layer svg { width: 100%; height: 100%; }

.ins-lens {
  position: absolute;
  top: 0;
  left: 0;
  width: 240px;
  height: 240px;
  margin: -120px 0 0 -120px;
  border-radius: 50%;
  overflow: hidden;
  pointer-events: none;
  z-index: 3;
  box-shadow: 0 0 0 1px rgba(223, 246, 255, .5), 0 0 40px rgba(56, 189, 248, .55), inset 0 0 30px rgba(2, 12, 24, .45);
  background: rgba(10, 25, 47, .3);
  transform: translate3d(-9999px, -9999px, 0);
  transition: opacity .3s ease;
  opacity: 0;
}
.inspector-scene.is-active .ins-lens { opacity: 1; }
.ins-lens-inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  will-change: transform;
}
.ins-lens-inner svg { width: 100%; height: 100%; }
.ins-lens-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, rgba(255, 255, 255, .22), transparent 42%);
  pointer-events: none;
}

.ins-hotspots { position: absolute; inset: 0; z-index: 4; pointer-events: none; }
.ins-hot { position: absolute; transform: translate(-50%, -50%); }
.ins-pin {
  display: block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(245, 158, 11, .9);
  box-shadow: 0 0 0 6px rgba(245, 158, 11, .18);
  animation: pinPulse 2.4s ease-in-out infinite;
}
@keyframes pinPulse {
  0%, 100% { box-shadow: 0 0 0 6px rgba(245, 158, 11, .18); }
  50% { box-shadow: 0 0 0 12px rgba(245, 158, 11, 0); }
}
.ins-card {
  position: absolute;
  left: 20px;
  top: -10px;
  width: max-content;
  max-width: 210px;
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(8, 21, 39, .74);
  border-color: rgba(245, 158, 11, .4);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(8px) scale(.94);
  transition: opacity .35s ease, transform .35s cubic-bezier(.22,1,.36,1);
}
.ins-hot.is-near .ins-card { opacity: 1; transform: translateY(0) scale(1); }
.ins-card.is-flip { left: auto; right: 20px; }
.ins-card b { display: block; font-size: .95rem; color: var(--spring-light); }
.ins-card span { font-size: .78rem; color: var(--text-muted); }

.ins-hint {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 5;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: .78rem;
  color: var(--text-soft);
  background: rgba(8, 21, 39, .6);
  border: 1px solid var(--glass-border);
  transition: opacity .3s ease;
}
.inspector-scene.is-active .ins-hint { opacity: 0; }

/* 三重防线 */
.eco-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-bottom: 40px;
}
.eco-card { position: relative; overflow: hidden; transition: transform .4s cubic-bezier(.22,1,.36,1), border-color .3s ease; }
.eco-card:hover { transform: translateY(-6px); border-color: var(--glass-border-strong); }
.eco-card::before {
  content: "";
  position: absolute;
  inset: auto -30% -60% auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56, 189, 248, .22), transparent 70%);
  pointer-events: none;
}
.card-index {
  display: inline-block;
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .16em;
  color: var(--spring-light);
  margin-bottom: 10px;
}
.eco-card h3 { font-size: 1.22rem; }
.eco-card p { color: var(--text-soft); font-size: .95rem; }

/* 检测报告入口 */
.report-cta {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 26px 30px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(52, 211, 153, .28);
  background: linear-gradient(120deg, rgba(5, 150, 105, .12), rgba(17, 46, 77, .5));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.report-badge {
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: var(--emerald-light);
  background: rgba(5, 150, 105, .16);
  border: 1px solid rgba(52, 211, 153, .4);
}
.report-badge svg { width: 28px; height: 28px; }
.report-cta > div { margin-right: auto; }
.report-cta h3 { margin: 0 0 4px; font-size: 1.14rem; }
.report-cta p { margin: 0; color: var(--text-muted); font-size: .92rem; }

/* ------------------------------ 7. 30天吊水 ------------------------------ */
.section-purify { background: radial-gradient(90% 60% at 50% 0%, rgba(23, 57, 92, .55), transparent 65%), #0A192F; }

.comparator { padding: 22px; overflow: hidden; }
.comparator-stage {
  position: relative;
  aspect-ratio: 900 / 460;
  border-radius: var(--r-md);
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}
.cmp-layer { position: absolute; inset: 0; }
.cmp-scene { position: absolute; inset: 0; }
.cmp-scene svg { width: 100%; height: 100%; }

.cmp-before { z-index: 2; clip-path: inset(0 calc(100% - var(--split, 50%)) 0 0); }
.cmp-after { z-index: 1; }

.cmp-tag {
  position: absolute;
  top: 16px;
  padding: 7px 16px;
  border-radius: 999px;
  font-size: .82rem;
  font-weight: 700;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.cmp-tag-before { left: 16px; background: rgba(90, 94, 74, .55); border: 1px solid rgba(185, 188, 164, .5); color: #E7EADB; }
.cmp-tag-after { right: 16px; background: rgba(8, 47, 73, .5); border: 1px solid rgba(223, 246, 255, .5); color: var(--spring-pale); }

.cmp-metrics {
  position: absolute;
  bottom: 16px;
  display: grid;
  gap: 8px;
  z-index: 3;
}
.cmp-metrics-left { left: 16px; }
.cmp-metrics-right { right: 16px; text-align: right; }
.cmp-metrics li {
  padding: 9px 14px;
  border-radius: 12px;
  background: rgba(8, 21, 39, .58);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.cmp-metrics b { display: block; font-size: .92rem; color: #fff; }
.cmp-metrics span { font-size: .74rem; color: var(--text-muted); }

.cmp-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--split, 50%);
  z-index: 5;
  width: 44px;
  margin-left: -22px;
  cursor: ew-resize;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cmp-handle-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  margin-left: -1px;
  background: linear-gradient(180deg, rgba(223, 246, 255, .2), var(--spring-light), rgba(223, 246, 255, .2));
  box-shadow: 0 0 18px rgba(125, 211, 252, .8);
}
.cmp-handle-knob {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #04222F;
  background: linear-gradient(140deg, #FFFFFF, var(--spring-light));
  box-shadow: 0 8px 30px rgba(56, 189, 248, .5);
  transition: transform .2s ease;
}
.cmp-handle:hover .cmp-handle-knob { transform: scale(1.08); }
.cmp-handle.is-dragging .cmp-handle-knob { transform: scale(.94); }
.cmp-handle-knob svg { width: 22px; height: 22px; }
.cmp-handle-day {
  position: absolute;
  top: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  white-space: nowrap;
  color: #04222F;
  background: rgba(223, 246, 255, .92);
  box-shadow: var(--shadow-sm);
}

.cmp-timeline { padding: 22px 8px 6px; }
.cmp-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(125, 211, 252, .5), rgba(125, 211, 252, .16));
  outline: none;
}
.cmp-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--spring-light);
  border: 3px solid #04222F;
  box-shadow: 0 0 0 4px rgba(125, 211, 252, .25);
  cursor: pointer;
}
.cmp-range::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border: 3px solid #04222F;
  border-radius: 50%;
  background: var(--spring-light);
  cursor: pointer;
}
.cmp-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--text-muted);
}
.cmp-readout {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}
.ro-item {
  padding: 14px 16px;
  border-radius: 14px;
  text-align: center;
  background: rgba(17, 46, 77, .45);
  border: 1px solid var(--glass-border);
}
.ro-item span { display: block; font-size: .76rem; color: var(--text-muted); letter-spacing: .06em; }
.ro-item b {
  font-size: 1.14rem;
  font-variant-numeric: tabular-nums;
  color: var(--spring-light);
}

.stage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 46px;
}
.stage-card { position: relative; transition: transform .4s cubic-bezier(.22,1,.36,1), border-color .3s ease, box-shadow .3s ease; }
.stage-card:hover { transform: translateY(-6px); border-color: var(--glass-border-strong); }
.stage-day {
  display: inline-block;
  margin-bottom: 12px;
  font-size: .84rem;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--gold);
}
.stage-card h3 { font-size: 1.2rem; }
.stage-card p { color: var(--text-soft); font-size: .95rem; min-height: 84px; }
.stage-bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(125, 211, 252, .16);
  overflow: hidden;
  margin-bottom: 10px;
}
.stage-bar i {
  display: block;
  height: 100%;
  width: var(--p);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--spring), var(--spring-light));
  box-shadow: 0 0 14px rgba(56, 189, 248, .6);
}
.stage-label { font-size: .8rem; color: var(--text-muted); letter-spacing: .06em; }

/* 鱼类动效（SVG） */
.fish-swim { animation: swimFloat 7s ease-in-out infinite; transform-origin: center; }
.fish-swim-before { animation-duration: 9s; }
.fish-swim-after { animation-duration: 6s; }
@keyframes swimFloat {
  0%, 100% { transform: translate3d(0, 0, 0) rotate(0deg); }
  50% { transform: translate3d(-14px, -10px, 0) rotate(-1.6deg); }
}
.rays-soft { animation: raySway 12s ease-in-out infinite; }
@keyframes raySway {
  0%, 100% { transform: translateX(0) skewX(0deg); opacity: .45; }
  50% { transform: translateX(26px) skewX(2deg); opacity: .7; }
}
.silt circle { animation: siltDrift 9s linear infinite; }
@keyframes siltDrift {
  0% { transform: translate(0, 0); opacity: .45; }
  50% { transform: translate(18px, -22px); opacity: .7; }
  100% { transform: translate(0, 0); opacity: .45; }
}
.bubbles circle { animation: bubbleUp 6s ease-in infinite; }
@keyframes bubbleUp {
  0% { transform: translateY(0); opacity: 0; }
  20% { opacity: .8; }
  100% { transform: translateY(-160px); opacity: 0; }
}
.scale-shine { animation: shinePulse 2.6s ease-in-out infinite; }
@keyframes shinePulse {
  0%, 100% { opacity: .35; }
  50% { opacity: .95; }
}

/* ------------------------------ 8. 双绝鱼种 ------------------------------ */
.section-varieties { background: linear-gradient(180deg, #0A192F 0%, #081527 100%); }
.variety-wrap { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.variety-card {
  overflow: hidden;
  padding: 0;
  transition: transform .45s cubic-bezier(.22,1,.36,1), border-color .3s ease;
}
.variety-card:hover { transform: translateY(-8px); border-color: var(--glass-border-strong); }
.variety-media {
  position: relative;
  padding: 26px 26px 8px;
  background: radial-gradient(80% 70% at 50% 30%, rgba(56, 189, 248, .18), transparent 70%);
}
.variety-media svg { width: 100%; height: auto; }
.vf-fish { animation: vfFloat 6s ease-in-out infinite; transform-origin: center; }
.variety-card-alt .vf-fish { animation-duration: 7.4s; }
@keyframes vfFloat {
  0%, 100% { transform: translate3d(0, 0, 0) rotate(0deg); }
  50% { transform: translate3d(10px, -12px, 0) rotate(1.4deg); }
}
.vf-shadow { animation: shadowBreath 6s ease-in-out infinite; }
@keyframes shadowBreath {
  0%, 100% { transform: scale(.92); opacity: .14; }
  50% { transform: scale(1.04); opacity: .22; }
}
.variety-body { padding: 8px 30px 32px; }
.variety-body h3 { font-size: 1.5rem; margin: 14px 0 10px; font-family: var(--font-serif); }
.variety-body p { color: var(--text-soft); font-size: .96rem; }
.spec-list { margin: 18px 0 24px; border-top: 1px dashed rgba(125, 211, 252, .22); }
.spec-list li {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(125, 211, 252, .18);
  font-size: .92rem;
}
.spec-list span { flex: 0 0 84px; color: var(--text-muted); }
.spec-list b { flex: 1; color: var(--text); font-weight: 600; }

/* ------------------------------ 9. 源头环境 ------------------------------ */
.section-source {
  position: relative;
  overflow: hidden;
  padding: 130px 0;
  isolation: isolate;
}
.source-scene { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.sky { position: absolute; inset: 0; background: linear-gradient(180deg, #071B2E 0%, #0E2D48 45%, #123E60 100%); }
.mountain { position: absolute; left: -5%; right: -5%; bottom: 42%; background-repeat: no-repeat; background-size: 100% 100%; }
.m-back {
  height: 40%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 300' preserveAspectRatio='none'%3E%3Cpath d='M0 300 L120 150 L240 240 L380 90 L520 230 L660 120 L800 250 L940 140 L1080 240 L1200 160 L1200 300 Z' fill='%230B2A45'/%3E%3C/svg%3E");
  opacity: .8;
}
.m-mid {
  height: 32%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 300' preserveAspectRatio='none'%3E%3Cpath d='M0 300 L150 180 L300 260 L450 140 L600 250 L760 150 L900 255 L1050 165 L1200 250 L1200 300 Z' fill='%23082138'/%3E%3C/svg%3E");
  animation: parallaxOne 26s ease-in-out infinite alternate;
}
.m-front {
  bottom: 0;
  height: 58%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 400' preserveAspectRatio='none'%3E%3Cpath d='M0 400 L140 260 L300 330 L470 230 L640 340 L820 250 L980 335 L1130 265 L1200 320 L1200 400 Z' fill='%23061527'/%3E%3C/svg%3E");
}
.waterfall {
  position: absolute;
  left: 62%;
  top: 22%;
  width: 74px;
  height: 46%;
  transform: rotate(2deg);
}
.waterfall i {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(223, 246, 255, .9), rgba(56, 189, 248, .35), rgba(56, 189, 248, 0));
  border-radius: 40px 40px 60px 60px;
  animation: fallFlow 1.6s linear infinite;
  opacity: .55;
}
.waterfall i:nth-child(2) { animation-duration: 2.2s; opacity: .35; }
.waterfall i:nth-child(3) { animation-duration: 2.8s; opacity: .25; }
@keyframes fallFlow {
  from { background-position-y: 0; filter: brightness(1); }
  to { background-position-y: 220px; filter: brightness(1.25); }
}
.mist {
  position: absolute;
  left: -20%;
  width: 140%;
  height: 120px;
  bottom: 34%;
  background: radial-gradient(60% 100% at 50% 50%, rgba(125, 211, 252, .22), transparent 70%);
  filter: blur(12px);
  animation: mistDrift 22s linear infinite;
}
.mist.m2 { bottom: 48%; height: 90px; animation-duration: 34s; animation-direction: reverse; opacity: .7; }
@keyframes mistDrift {
  from { transform: translateX(-8%); }
  to { transform: translateX(8%); }
}
.lake {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 26%;
  background: linear-gradient(180deg, #0F3A5C 0%, #0A192F 100%);
}
.caustic {
  position: absolute;
  inset: auto 0 0 0;
  height: 30%;
  background:
    repeating-linear-gradient(72deg, rgba(125, 211, 252, .10) 0 3px, transparent 3px 42px),
    repeating-linear-gradient(108deg, rgba(125, 211, 252, .08) 0 3px, transparent 3px 56px);
  animation: causticShift 18s linear infinite;
  mask-image: linear-gradient(180deg, transparent, #000 40%);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 40%);
}
@keyframes causticShift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 120px 40px, -140px 60px; }
}
@keyframes parallaxOne {
  from { transform: translateX(-1.5%); }
  to { transform: translateX(1.5%); }
}
.source-content { position: relative; }

.source-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-bottom: 34px;
}
.stat-card { text-align: center; padding: 34px 24px; transition: transform .4s cubic-bezier(.22,1,.36,1); }
.stat-card:hover { transform: translateY(-6px); }
.stat-num {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.4vw, 2.9rem);
  font-weight: 700;
  letter-spacing: .02em;
  background: linear-gradient(100deg, var(--spring-light), var(--spring) 45%, var(--emerald-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-variant-numeric: tabular-nums;
}
.stat-card span { display: block; margin-top: 12px; color: var(--text-soft); font-size: .93rem; }

.source-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.source-facts li {
  padding: 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--glass-border);
  background: rgba(8, 21, 39, .42);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.source-facts b { display: block; font-size: .82rem; color: var(--spring-light); letter-spacing: .1em; margin-bottom: 4px; }
.source-facts span { font-size: .9rem; color: var(--text-soft); }

/* ------------------------------ 10. B2B 表单 ------------------------------ */
.section-contact { background: linear-gradient(180deg, #081527 0%, #0A192F 100%); }
.contact-wrap {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 52px;
  align-items: start;
}
.contact-promise {
  margin: 22px 0 26px;
  padding: 20px 24px;
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: linear-gradient(100deg, rgba(245, 158, 11, .12), rgba(245, 158, 11, 0));
  font-size: 1.05rem;
  color: var(--text);
}
.contact-promise b { color: var(--gold); }
.contact-direct {
  display: flex;
  gap: 34px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px dashed rgba(125, 211, 252, .24);
}
.contact-direct span { display: block; font-size: .8rem; color: var(--text-muted); letter-spacing: .1em; }
.contact-direct b { font-size: 1.12rem; color: var(--spring-light); }

.contact-form { padding: 34px; }
.contact-form h3 { font-size: 1.32rem; margin-bottom: 22px; }
.field { margin-bottom: 18px; border: 0; padding: 0; }
.field label {
  display: block;
  margin-bottom: 8px;
  font-size: .86rem;
  color: var(--text-soft);
}
.field label i { color: var(--gold); font-style: normal; }
.field input[type="text"],
.field input[type="tel"] {
  width: 100%;
  padding: 14px 16px;
  font: inherit;
  font-size: .96rem;
  color: var(--text);
  background: rgba(8, 21, 39, .6);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  transition: border-color .25s ease, box-shadow .25s ease, background-color .25s ease;
}
.field input::placeholder { color: rgba(127, 157, 187, .7); }
.field input:focus {
  outline: none;
  border-color: var(--spring);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, .14);
  background: rgba(8, 21, 39, .85);
}
.field.has-error input { border-color: #F87171; box-shadow: 0 0 0 4px rgba(248, 113, 113, .12); }
.field .err { display: block; margin-top: 6px; min-height: 16px; font-size: .78rem; color: #FCA5A5; }

.field-radio legend { font-size: .86rem; color: var(--text-soft); margin-bottom: 8px; padding: 0; }
.radio-row { display: flex; gap: 10px; flex-wrap: wrap; }
.radio-row label {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: .9rem;
  cursor: pointer;
  border: 1px solid var(--glass-border);
  background: rgba(8, 21, 39, .5);
  transition: border-color .25s ease, background-color .25s ease, color .25s ease;
}
.radio-row input { position: absolute; opacity: 0; width: 0; height: 0; }
.radio-row input:checked + span { color: var(--spring-light); }
.radio-row label:has(input:checked) {
  border-color: var(--spring);
  background: rgba(56, 189, 248, .14);
  color: var(--spring-light);
}
.radio-row input:focus-visible + span { outline: 2px solid var(--spring-light); outline-offset: 4px; }

.form-note { margin: 14px 0 0; font-size: .8rem; color: var(--text-muted); text-align: center; }
.form-status {
  margin: 12px 0 0;
  min-height: 22px;
  font-size: .88rem;
  text-align: center;
  color: var(--emerald-light);
}
.form-status.is-error { color: #FCA5A5; }
#submitBtn[disabled] { opacity: .7; cursor: progress; transform: none; }

/* ------------------------------ 11. Footer ------------------------------ */
.site-footer {
  padding: 64px 0 28px;
  background: #061222;
  border-top: 1px solid rgba(125, 211, 252, .12);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr auto;
  gap: 34px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(125, 211, 252, .12);
}
.footer-brand strong { display: block; font-size: 1.14rem; margin-bottom: 10px; }
.footer-col h4 { font-size: .92rem; color: var(--spring-light); letter-spacing: .08em; margin-bottom: 12px; }
.footer-col p, .footer-brand p { color: var(--text-muted); font-size: .88rem; margin-bottom: 6px; }
.footer-col a:hover { color: var(--spring-light); }
.footer-qr { max-width: 180px; }
.qr-card {
  width: 96px;
  height: 96px;
  padding: 6px;
  border-radius: 12px;
  background: #fff;
  margin-bottom: 8px;
}
.qr-card svg { width: 100%; height: 100%; }
.footer-qr small { display: block; font-size: .74rem; color: var(--text-muted); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 22px;
  font-size: .8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.footer-bottom p { margin: 0; }
.footer-links { display: flex; gap: 18px; }
.footer-links a:hover { color: var(--spring-light); }

/* ------------------------------ 12. 弹窗 ------------------------------ */
.modal { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 24px; }
.modal[hidden] { display: none; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 10, 20, .72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  animation: fadeIn .25s ease;
}
.modal-panel {
  position: relative;
  z-index: 2;
  width: min(760px, 100%);
  max-height: 86vh;
  overflow: auto;
  padding: 34px;
  background: var(--glass-bg-strong);
  animation: modalIn .32s cubic-bezier(.22,1,.36,1);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes modalIn { from { opacity: 0; transform: translateY(24px) scale(.97); } to { opacity: 1; transform: none; } }
.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: rgba(125, 211, 252, .08);
  color: var(--text);
  cursor: pointer;
  transition: background-color .25s ease, transform .25s ease;
}
.modal-close:hover { background: rgba(125, 211, 252, .2); transform: rotate(90deg); }
.modal-close svg { width: 18px; height: 18px; }
.modal-panel h3 { font-size: 1.3rem; }

.tabs { display: flex; gap: 8px; margin: 18px 0 20px; flex-wrap: wrap; }
.tab {
  padding: 9px 16px;
  border-radius: 999px;
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-soft);
  border: 1px solid var(--glass-border);
  background: rgba(8, 21, 39, .5);
  transition: all .25s ease;
}
.tab.is-active { color: #04222F; background: linear-gradient(100deg, var(--spring-light), var(--spring)); border-color: transparent; }
.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fadeIn .3s ease; }

.rep-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.rep-table caption { text-align: left; color: var(--text-muted); font-size: .8rem; padding-bottom: 10px; }
.rep-table th, .rep-table td { padding: 11px 12px; text-align: left; border-bottom: 1px solid rgba(125, 211, 252, .16); }
.rep-table th { color: var(--spring-light); font-weight: 600; font-size: .84rem; }
.rep-table td.ok { color: var(--emerald-light); font-weight: 600; }
.modal-note { margin: 18px 0 0; font-size: .78rem; color: var(--text-muted); }

/* ------------------------------ 13. 滚动淡入 ------------------------------ */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s cubic-bezier(.22, 1, .36, 1), transform .7s cubic-bezier(.22, 1, .36, 1);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* ------------------------------ 14. 响应式 ------------------------------ */
@media (max-width: 1024px) {
  :root { --nav-h: 66px; }
  .header-cta { display: none; }
  .variety-wrap { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; gap: 40px; }
  .source-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 10px 16px 18px;
    background: rgba(8, 21, 39, .95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform .3s ease, opacity .3s ease, visibility .3s ease;
  }
  .primary-nav.is-open { transform: none; opacity: 1; visibility: visible; }
  .primary-nav a { padding: 14px 12px; font-size: 1rem; border-radius: 12px; }
  .primary-nav a.is-active::after { display: none; }

  .section { padding: 84px 0; }
  .br-desktop { display: none; }
  .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-hint { display: none; }
  .eco-grid { grid-template-columns: 1fr; }
  .stage-grid { grid-template-columns: 1fr; }
  .stage-card p { min-height: 0; }
  .source-stats { grid-template-columns: 1fr; }
  .source-facts { grid-template-columns: 1fr; }
  .cmp-readout { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .report-cta { flex-wrap: wrap; }
  .report-cta > div { margin-right: 0; width: 100%; }
  .ins-lens { width: 180px; height: 180px; margin: -90px 0 0 -90px; }
  .ins-card { max-width: 160px; padding: 9px 12px; left: 14px; }
  .modal-panel { padding: 26px 20px; }
  .rep-table { font-size: .82rem; }
  .rep-table th, .rep-table td { padding: 9px 8px; }
}

@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .card { padding: 24px; }
  .hero-content { padding-top: 82px; }
  .hero-title { font-size: clamp(2rem, 9vw, 2.7rem); }
  .hero-actions .btn { width: 100%; }
  .cmp-metrics { display: none; }
  .contact-form { padding: 26px 20px; }
  .contact-direct { flex-direction: column; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .chain-node { min-width: 132px; padding: 18px 12px; }
  .chain-link { flex-basis: 24px; }
}

@media (hover: none) {
  .inspector-scene { cursor: default; }
}

/* --------------------------- 服务承诺条 --------------------------- */
.promise-strip {
  position: relative;
  padding: 46px 0 40px;
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  background: linear-gradient(180deg, #0A192F 0%, #081527 100%);
  overflow: hidden;
}
.promise-bg {
  position: absolute;
  inset: 0;
  background: url("../img/fresh-sashimi.webp") center / cover no-repeat;
  opacity: .16;
  filter: saturate(120%);
  pointer-events: none;
}
.promise-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #0A192F 0%, rgba(10, 25, 47, .82) 45%, rgba(8, 21, 39, .95) 100%);
}
.promise-strip > .container { position: relative; }

.promise-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.promise-list li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  border-radius: 18px;
  background: rgba(11, 32, 55, .5);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform .35s cubic-bezier(.22,1,.36,1), border-color .3s ease;
}
.promise-list li:hover { transform: translateY(-4px); border-color: var(--glass-border-strong); }
.promise-icon {
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: var(--spring-light);
  background: rgba(56, 189, 248, .12);
  border: 1px solid rgba(56, 189, 248, .38);
}
.promise-icon svg { width: 26px; height: 26px; }
.promise-text b { display: block; font-size: 1.06rem; margin-bottom: 2px; }
.promise-text span { font-size: .87rem; color: var(--text-muted); }
.promise-foot {
  margin: 22px 0 0;
  text-align: center;
  font-size: .88rem;
  letter-spacing: .06em;
  color: var(--text-muted);
}

/* --------------------------- 品控体系区块 --------------------------- */
.section-quality { background: linear-gradient(180deg, #081527 0%, #0A192F 100%); }

.qc-stack { display: grid; gap: 14px; margin-bottom: 46px; }
.qc-row {
  display: flex;
  gap: 22px;
  align-items: flex-start;
  padding: 22px 26px;
  border-radius: 18px;
  background: rgba(11, 32, 55, .42);
  border: 1px solid var(--glass-border);
  transition: transform .35s cubic-bezier(.22,1,.36,1), border-color .3s ease, background-color .3s ease;
}
.qc-row:hover {
  transform: translateX(6px);
  border-color: var(--glass-border-strong);
  background: rgba(17, 46, 77, .5);
}
.qc-freq {
  flex: 0 0 78px;
  text-align: center;
  padding: 7px 0;
  border-radius: 999px;
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .08em;
}
.freq-daily { background: rgba(56, 189, 248, .16); color: var(--spring-light); border: 1px solid rgba(56, 189, 248, .45); }
.freq-continual { background: rgba(5, 150, 105, .16); color: var(--emerald-light); border: 1px solid rgba(52, 211, 153, .42); }
.freq-periodic { background: rgba(245, 158, 11, .14); color: #FCD34D; border: 1px solid rgba(245, 158, 11, .42); }
.freq-batch { background: rgba(167, 139, 250, .14); color: #C4B5FD; border: 1px solid rgba(167, 139, 250, .42); }
.qc-row-body h3 { font-size: 1.08rem; margin-bottom: 6px; }
.qc-row-body p { margin: 0; color: var(--text-soft); font-size: .94rem; }

/* 流程配图 */
.qc-flow { padding: 28px; margin-bottom: 46px; }
.qc-flow figcaption { margin-bottom: 18px; }
.qc-flow figcaption h3 { font-size: 1.24rem; margin-bottom: 4px; }
.qc-flow figcaption p { margin: 0; color: var(--text-muted); font-size: .92rem; }
.qc-flow svg { width: 100%; height: auto; }
.qc-t1 { fill: #E8F3FF; font-size: 20px; font-weight: 700; }
.qc-t2 { fill: #7DD3FC; font-size: 15px; }
.qc-tiny { fill: #7F9DBB; font-size: 14px; }
.qc-return-flow { animation: flowDash 3s linear infinite; }
@keyframes flowDash { to { stroke-dashoffset: -72; } }
.qc-node rect { transition: stroke-opacity .3s ease, filter .3s ease; }
.qc-node:hover rect { stroke-opacity: 1; filter: drop-shadow(0 0 14px rgba(56, 189, 248, .5)); }
.qc-node-key rect { filter: drop-shadow(0 0 10px rgba(245, 158, 11, .35)); }

/* 卡片 */
.qc-feature { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-bottom: 24px; }
.qc-card { transition: transform .4s cubic-bezier(.22,1,.36,1), border-color .3s ease; }
.qc-card:hover { transform: translateY(-6px); border-color: var(--glass-border-strong); }
.qc-card-media { padding: 0; overflow: hidden; }
.qc-media { position: relative; }
.qc-media img { width: 100%; height: 232px; object-fit: cover; }
.qc-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 25, 47, 0) 40%, rgba(10, 25, 47, .55) 100%);
  pointer-events: none;
}
.qc-card-body { padding: 26px; }
.qc-card-body h3 { font-size: 1.18rem; margin: 14px 0 10px; }
.qc-card-body p { color: var(--text-soft); font-size: .95rem; }

.qc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; margin-bottom: 44px; }
.qc-index {
  display: inline-block;
  margin-bottom: 10px;
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .16em;
  color: var(--spring-light);
}
.qc-grid h3 { font-size: 1.14rem; }
.qc-grid p { color: var(--text-soft); font-size: .94rem; }
.qc-meta {
  display: block;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed rgba(125, 211, 252, .22);
  font-size: .8rem;
  color: var(--text-muted);
}

/* 对照表 */
.qc-table-wrap { padding: 30px; }
.qc-table-wrap h3 { font-size: 1.2rem; margin-bottom: 18px; }
.qc-table-scroll { overflow-x: auto; }
.qc-table { width: 100%; min-width: 660px; border-collapse: collapse; font-size: .92rem; }
.qc-table th, .qc-table td { padding: 13px 14px; text-align: left; border-bottom: 1px solid rgba(125, 211, 252, .16); }
.qc-table th { color: var(--spring-light); font-size: .84rem; font-weight: 600; letter-spacing: .04em; }
.qc-table td { color: var(--text-soft); }
.qc-table td:first-child { color: var(--text); font-weight: 600; }
.qc-chip {
  display: inline-block;
  padding: 3px 11px;
  border-radius: 999px;
  font-size: .76rem;
  white-space: nowrap;
  background: rgba(56, 189, 248, .12);
  border: 1px solid rgba(56, 189, 248, .35);
  color: var(--spring-light);
}
.qc-chip-gold { background: rgba(245, 158, 11, .12); border-color: rgba(245, 158, 11, .38); color: #FCD34D; }
.qc-note { margin: 18px 0 0; font-size: .85rem; color: var(--text-muted); }
.qc-note b { color: var(--spring-light); }

@media (max-width: 1024px) {
  .qc-feature { grid-template-columns: 1fr; }
  .qc-grid { grid-template-columns: 1fr; }
  .qc-media img { height: 210px; }
}
@media (max-width: 860px) {
  .promise-list { grid-template-columns: 1fr; }
  .qc-row { padding: 18px 20px; gap: 16px; }
  .qc-freq { flex-basis: 64px; font-size: .78rem; }
  .qc-flow { padding: 22px 18px; }
  .qc-table-wrap { padding: 24px 18px; }
}
@media (max-width: 560px) {
  .qc-row { flex-direction: column; }
  .qc-freq { flex: 0 0 auto; align-self: flex-start; padding: 5px 14px; }
  .qc-media img { height: 176px; }
  .promise-foot { font-size: .82rem; }
}

/* ------------------------------ 15. 无障碍降级 ------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .hero-fallback::after { display: none; }
}

@media print {
  .site-header, .hero canvas, .hero-fallback, .scroll-hint, .hero-hint, .modal { display: none !important; }
  body { background: #fff; color: #000; }
}