/* =========================================================
   丝漉 SluviE — 全站样式
   Design language: editorial grid, oversized type, hairline rules
   ========================================================= */

/* ---------- 1. Tokens ---------- */
:root {
  /* 品牌主色 —— 以产品包装宝蓝为准 */
  --blue:        #1878C8;
  --blue-deep:   #0B5C9E;
  --blue-bright: #2E9BE8;
  --blue-soft:   #E9F3FC;

  --navy:        #0B1E33;
  --navy-2:      #071525;
  --navy-3:      #122B47;

  /* 强调 —— 包装明黄 */
  --yellow:      #FFD400;
  --yellow-dim:  #E8C200;

  /* 辅助 —— logo 青蓝 */
  --cyan:        #4FD0F0;

  /* 中性 */
  --paper:       #F7F8FA;
  --white:       #FFFFFF;
  --ink:         #0E1A26;
  --ink-2:       #4A5A6B;
  --ink-3:       #8A98A6;
  --line:        rgba(14, 26, 38, 0.11);
  --line-2:      rgba(14, 26, 38, 0.06);
  --line-dark:   rgba(255, 255, 255, 0.12);
  --line-dark-2: rgba(255, 255, 255, 0.06);

  /* 字体 */
  --font-ui:      "Outfit", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Noto Sans SC", "Outfit", "PingFang SC", sans-serif;
  --font-serif:   "Instrument Serif", Georgia, serif;
  --font-mono:    ui-monospace, "SF Mono", "Roboto Mono", Consolas, monospace;

  /* 尺度 */
  --wrap: 1320px;
  --pad: clamp(20px, 4vw, 56px);
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-io: cubic-bezier(0.65, 0, 0.35, 1);

  --nav-h: 84px;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 16.5px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

h1, h2, h3, h4, h5, p, figure, blockquote, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; border: none; background: none; cursor: pointer; }
table { border-collapse: collapse; }

::selection { background: var(--yellow); color: var(--navy); }

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

/* ---------- 3. Layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
  position: relative;
  z-index: 2;
}
.wrap--narrow { max-width: 980px; }

.section { padding: clamp(72px, 10vw, 156px) 0; position: relative; z-index: 2; }
.section--white { background: var(--white); }
.section--dark { background: var(--navy); color: var(--white); }

/* 章节标尺 */
.rule {
  height: 1px;
  background: var(--line);
  width: 100%;
}
.rule--dark { background: var(--line-dark); }
.rule--strong { background: var(--ink); opacity: 0.22; }

/* ---------- 4. Typography ---------- */
.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 24px;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
  flex-shrink: 0;
}
.eyebrow--light { color: var(--cyan); }

.sec-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 4.6vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.038em;
  color: var(--ink);
  text-wrap: balance;
}
.section--dark .sec-title { color: var(--white); }

.sec-lead {
  margin-top: 24px;
  font-size: clamp(15px, 1.25vw, 17.5px);
  line-height: 1.78;
  color: var(--ink-2);
  max-width: 56ch;
  text-wrap: pretty;
}
.section--dark .sec-lead { color: rgba(255, 255, 255, 0.62); }

.hl {
  position: relative;
  display: inline-block;
  white-space: nowrap;
}
.hl::after {
  content: "";
  position: absolute;
  left: -0.06em; right: -0.06em;
  bottom: 0.05em;
  height: 0.32em;
  background: var(--yellow);
  z-index: -1;
  transform: skewX(-5deg) scaleX(0);
  transform-origin: left;
  transition: transform 0.9s var(--ease-out) 0.3s;
}
.is-in .hl::after,
.hero .hl::after { transform: skewX(-5deg) scaleX(1); }

/* ---------- 5. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 28px;
  font-family: var(--font-ui);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 0.005em;
  border-radius: 100px;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
              background 0.28s ease, color 0.28s ease, border-color 0.28s ease;
}
.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 10px 24px -12px rgba(24, 120, 200, 0.7);
}
.btn--primary:hover {
  background: var(--blue-deep);
  box-shadow: 0 16px 32px -12px rgba(24, 120, 200, 0.8);
}

.btn--yellow {
  background: var(--yellow);
  color: var(--navy);
}
.btn--yellow:hover { background: #FFE23D; box-shadow: 0 16px 32px -14px rgba(255, 212, 0, 0.7); }

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn--ghost:hover { border-color: var(--ink); }

.btn--ghost-light {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--line-dark);
}
.btn--ghost-light:hover { border-color: rgba(255, 255, 255, 0.5); }

.btn--sm { padding: 10px 20px; font-size: 13.5px; }
.btn--lg { padding: 16px 36px; font-size: 15.5px; }

/* 箭头链接 */
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  transition: gap 0.3s var(--ease);
}
.arrow-link::after {
  content: "";
  width: 16px; height: 10px;
  background: currentColor;
  clip-path: polygon(0 40%, 65% 40%, 65% 0, 100% 50%, 65% 100%, 65% 60%, 0 60%);
  transition: transform 0.3s var(--ease);
}
.arrow-link:hover { gap: 13px; }

/* ---------- 6. 年龄门 ---------- */
.age-gate {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: grid;
  place-items: center;
  background: var(--navy-2);
  padding: 28px;
  transition: opacity 0.6s var(--ease), visibility 0.6s var(--ease);
}
.age-gate.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.age-gate__panel {
  width: 100%;
  max-width: 480px;
  text-align: center;
  color: var(--white);
  animation: gateIn 0.8s var(--ease-out) both;
}
@keyframes gateIn {
  from { opacity: 0; translate: 0 22px; }
  to   { opacity: 1; translate: 0 0; }
}

.age-gate__logo {
  width: 150px;
  margin: 0 auto 40px;
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

.age-gate__num {
  font-family: var(--font-ui);
  font-size: 84px;
  font-weight: 200;
  line-height: 0.9;
  letter-spacing: -0.05em;
  margin-bottom: 24px;
}
.age-gate__num span {
  font-size: 0.42em;
  color: var(--yellow);
  vertical-align: super;
  margin-left: 4px;
  font-weight: 400;
}

.age-gate__title {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.age-gate__desc {
  font-size: 14px;
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.58);
  max-width: 34ch;
  margin: 0 auto 36px;
}

.age-gate__actions {
  display: grid;
  gap: 10px;
  max-width: 290px;
  margin: 0 auto 32px;
}

.age-gate .btn--primary {
  background: var(--yellow);
  color: var(--navy);
  box-shadow: none;
}
.age-gate .btn--primary:hover { background: #FFE23D; }

.age-gate .btn--ghost {
  color: rgba(255, 255, 255, 0.62);
  border-color: rgba(255, 255, 255, 0.18);
}
.age-gate .btn--ghost:hover { color: var(--white); border-color: rgba(255, 255, 255, 0.42); }

.age-gate__foot {
  font-size: 11px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.3);
  max-width: 34ch;
  margin: 0 auto;
}

/* 未满拦截 */
.age-block {
  position: fixed;
  inset: 0;
  z-index: 10001;
  display: grid;
  place-items: center;
  background: var(--navy-2);
  padding: 28px;
  text-align: center;
  color: var(--white);
}
.age-block[hidden] { display: none; }
.age-block h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 14px;
}
.age-block p {
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.55);
  max-width: 30ch;
  margin: 0 auto;
  line-height: 1.75;
}

/* ---------- 7. Nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.45s ease, border-color 0.45s ease;
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(247, 248, 250, 0.86);
  backdrop-filter: blur(18px) saturate(170%);
  -webkit-backdrop-filter: blur(18px) saturate(170%);
  border-bottom-color: var(--line-2);
}
.nav--dark { color: var(--white); border-bottom-color: var(--line-dark-2); }
.nav--dark.is-stuck {
  background: rgba(7, 21, 37, 0.86);
  border-bottom-color: var(--line-dark);
}

.nav__inner {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  gap: 40px;
}

.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand__logo {
  width: 106px;
  mix-blend-mode: multiply;
  transition: opacity 0.3s ease;
}
.nav--dark .brand__logo { filter: brightness(0) invert(1); mix-blend-mode: normal; }
.brand:hover .brand__logo { opacity: 0.65; }

.nav__links {
  display: flex;
  gap: 32px;
  margin-left: auto;
  font-size: 14px;
}
.nav__links a {
  position: relative;
  padding: 4px 0;
  color: var(--ink-2);
  transition: color 0.25s ease;
}
.nav--dark .nav__links a { color: rgba(255, 255, 255, 0.62); }
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -1px;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}
.nav__links a:hover { color: var(--blue); }
.nav--dark .nav__links a:hover { color: var(--white); }
.nav__links a:hover::after,
.nav__links a.is-current::after { transform: scaleX(1); transform-origin: left; }
.nav__links a.is-current { color: var(--blue); }
.nav--dark .nav__links a.is-current { color: var(--white); }

.nav__right { display: flex; align-items: center; gap: 18px; }

.lang-switch {
  display: inline-flex;
  white-space: nowrap;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  padding: 6px 2px;
}
.nav--dark .lang-switch { color: rgba(255, 255, 255, 0.45); }
.lang-switch__opt { transition: color 0.25s ease; }
.lang-switch__opt.is-active { color: var(--ink); font-weight: 700; }
.nav--dark .lang-switch__opt.is-active { color: var(--yellow); }
.lang-switch__sep { opacity: 0.4; }

.nav__toggle {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav__toggle span {
  display: block;
  width: 20px; height: 1.5px;
  background: currentColor;
  transition: transform 0.35s var(--ease);
}
.nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line-2);
  padding: 20px var(--pad) 36px;
  display: grid;
  gap: 0;
  box-shadow: 0 30px 60px -30px rgba(14, 26, 38, 0.3);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu a:not(.btn) {
  padding: 18px 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  border-bottom: 1px solid var(--line-2);
}
.mobile-menu .btn { margin-top: 24px; }

/* ---------- 8. Hero (首页) ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: var(--navy-2);
  color: var(--white);
  overflow: hidden;
  padding: calc(var(--nav-h) + 40px) 0 60px;
}

/* 网格底面 */
.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-dark-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark-2) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, #000 20%, transparent 78%);
  pointer-events: none;
}

.hero__glow {
  position: absolute;
  width: 1000px; height: 1000px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(24, 120, 200, 0.3) 0%, rgba(24, 120, 200, 0.07) 40%, transparent 66%);
  top: -32%; right: -22%;
  pointer-events: none;
  animation: glowFloat 22s ease-in-out infinite;
}
@keyframes glowFloat {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50%      { transform: translate3d(-44px, 36px, 0) scale(1.08); }
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  width: 100%;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 30px;
}
.hero__eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 0 0 0 0 rgba(255, 212, 0, 0.6);
  animation: pip 2.6s ease-out infinite;
}
@keyframes pip {
  0%   { box-shadow: 0 0 0 0 rgba(255, 212, 0, 0.55); }
  70%  { box-shadow: 0 0 0 10px rgba(255, 212, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 212, 0, 0); }
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 6.4vw, 82px);
  line-height: 1.04;
  letter-spacing: -0.045em;
  color: var(--white);
}
.hero__title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--yellow);
}

.hero__en {
  margin-top: 22px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(17px, 1.9vw, 23px);
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.01em;
}

.hero__sub {
  margin-top: 26px;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 40ch;
}

.hero__cta { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 12px; }

/* Hero 视觉 —— 双产品 */
.hero__showcase {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 460px;
}
.hero__product {
  width: min(100%, 330px);
  border-radius: var(--r-lg);
  filter: drop-shadow(0 40px 70px rgba(0, 0, 0, 0.55));
  animation: floatY 7s ease-in-out infinite;
}
.hero__product--back {
  position: absolute;
  width: min(62%, 200px);
  right: 2%;
  bottom: 6%;
  opacity: 0.96;
  animation-delay: -3.5s;
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-16px); }
}

.hero__statbadge {
  position: absolute;
  left: 0;
  bottom: 10%;
  background: var(--yellow);
  color: var(--navy);
  padding: 16px 22px;
  border-radius: var(--r-md);
  display: grid;
  gap: 2px;
  box-shadow: 0 24px 48px -20px rgba(255, 212, 0, 0.6);
}
.hero__statbadge b {
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
}
.hero__statbadge b span { font-size: 0.58em; }
.hero__statbadge small {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.7;
}

/* 首屏底部条 */
.hero__meta {
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  border-top: 1px solid var(--line-dark-2);
  padding: 16px 0;
}
.hero__meta-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
}
.hero__scroll {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero__scroll::after {
  content: "";
  width: 1px; height: 14px;
  background: currentColor;
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
  50%      { opacity: 1; transform: scaleY(1); }
}

/* ---------- 9. 信任条 ---------- */
.trust {
  background: var(--white);
  border-bottom: 1px solid var(--line-2);
}
.trust__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.trust__item {
  padding: 36px 28px;
  border-right: 1px solid var(--line-2);
  display: grid;
  gap: 6px;
}
.trust__item:last-child { border-right: none; }
.trust__item b {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.6vw, 22px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.trust__item span {
  font-size: 12.5px;
  color: var(--ink-3);
}
.trust__item--accent b { color: var(--blue); }

/* ---------- 10. 明星产品（如佑双款） ---------- */
.star {
  background: var(--white);
}

.star__head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: end;
  margin-bottom: clamp(40px, 5vw, 64px);
}

.star__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(16px, 2.4vw, 28px);
}

.starcard {
  position: relative;
  background: var(--paper);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.6s var(--ease);
  border: 1px solid var(--line-2);
}
.starcard:hover { transform: translateY(-6px); }

.starcard__media {
  position: relative;
  aspect-ratio: 5 / 4;
  background: #FBFCFD;
  display: grid;
  place-items: center;
  padding: clamp(24px, 4vw, 52px);
  overflow: hidden;
}
.starcard__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
  transition: transform 0.9s var(--ease);
}
.starcard:hover .starcard__media img { transform: scale(1.06); }

.starcard__flag {
  position: absolute;
  top: 20px; left: 20px;
  padding: 6px 14px;
  border-radius: 100px;
  background: var(--yellow);
  color: var(--navy);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.starcard__body {
  padding: clamp(22px, 2.4vw, 34px);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.starcard__idx {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  margin-bottom: 14px;
}

.starcard__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.18;
}

.starcard__en {
  margin-top: 6px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 15px;
  color: var(--blue);
}

.starcard__desc {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-2);
  flex: 1;
}

.starcard__specs {
  margin-top: 22px;
  display: grid;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--line-2);
}
.starcard__specs li {
  position: relative;
  padding-left: 20px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-2);
}
.starcard__specs li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.62em;
  width: 8px; height: 1px;
  background: var(--blue);
}

.starcard__foot {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.starcard__price {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
}

/* 产品编号水印 */
.starcard__wm {
  position: absolute;
  right: 18px; bottom: 10px;
  font-family: var(--font-display);
  font-size: 78px;
  font-weight: 900;
  letter-spacing: -0.05em;
  color: var(--ink);
  opacity: 0.03;
  pointer-events: none;
  line-height: 1;
}

/* ---------- 11. 系列入口 ---------- */
.series { background: var(--paper); }

.series__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(14px, 1.8vw, 22px);
}

.seriescard {
  position: relative;
  aspect-ratio: 3 / 3.9;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line-2);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 26px 24px;
  transition: transform 0.6s var(--ease), box-shadow 0.6s var(--ease);
  isolation: isolate;
}
.seriescard:hover {
  transform: translateY(-7px);
  box-shadow: 0 30px 60px -34px rgba(14, 26, 38, 0.4);
}

.seriescard__img {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 22px;
  z-index: -1;
  transition: transform 0.9s var(--ease);
}
.seriescard__img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
  opacity: 0.96;
}
.seriescard:hover .seriescard__img { transform: scale(1.07); }

.seriescard__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(to top, rgba(255,255,255,0.96) 0%, rgba(255,255,255,0.75) 30%, rgba(255,255,255,0) 62%);
}

.seriescard__count {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  margin-bottom: 8px;
}
.seriescard h3 {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.7vw, 21px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.24;
  margin-bottom: 6px;
}
.seriescard p {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-2);
}
.seriescard__go {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.seriescard__go::after {
  content: "";
  width: 13px; height: 1px;
  background: currentColor;
  transition: width 0.35s var(--ease);
}
.seriescard:hover .seriescard__go::after { width: 24px; }

/* ---------- 12. 科技（深色） ---------- */
.tech__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
}

.tech__stats {
  display: flex;
  gap: clamp(32px, 5vw, 64px);
  margin-top: 48px;
  flex-wrap: wrap;
}
.tech__stat b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(34px, 4.4vw, 54px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--yellow);
}
.tech__stat b span { font-size: 0.5em; }
.tech__stat small {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.45);
}

.tech__note {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line-dark);
  font-size: 11.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.35);
  max-width: 56ch;
}

.tech__visual {
  position: relative;
  display: flex;
  justify-content: center;
}
.tech__img {
  width: min(100%, 340px);
  border-radius: var(--r-lg);
  filter: drop-shadow(0 34px 64px rgba(0, 0, 0, 0.5));
}
.tech__ring {
  position: absolute;
  inset: 8% 12%;
  border: 1px solid rgba(79, 208, 240, 0.16);
  border-radius: 50%;
  pointer-events: none;
}

/* ---------- 13. 品牌理念 ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.pillar {
  padding: 40px 28px 44px;
  border-right: 1px solid var(--line);
  transition: background 0.4s ease;
}
.pillar:last-child { border-right: none; }
.pillar:hover { background: var(--white); }

.pillar__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--blue);
  margin-bottom: 28px;
}
.pillar h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 1.8vw, 22px);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 14px;
}
.pillar p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-2);
}

/* ---------- 14. 购买渠道 ---------- */
.channels {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(12px, 1.6vw, 20px);
}
.channel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 190px;
  padding: 28px 24px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--line-dark);
  border-radius: var(--r-lg);
  transition: background 0.4s ease, border-color 0.4s ease, transform 0.4s var(--ease);
}
.channel:hover {
  background: rgba(255, 255, 255, 0.085);
  border-color: rgba(255, 212, 0, 0.45);
  transform: translateY(-5px);
}
.channel__icon {
  width: 30px; height: 30px;
  color: var(--yellow);
  margin-bottom: 24px;
}
.channel__icon svg { width: 100%; height: 100%; }
.channel b {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: block;
  margin-bottom: 5px;
}
.channel span {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.45);
}

/* ---------- 15. 联系 ---------- */
.contact__grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}

.contact__list { border-top: 1px solid var(--line); }
.contact__list li {
  display: flex;
  gap: 28px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.contact__label {
  width: 88px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.contact__list a,
.contact__list span:not(.contact__label) {
  font-size: 15.5px;
  font-weight: 500;
  position: relative;
}
.contact__list a { transition: color 0.25s ease; }
.contact__list a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}
.contact__list a:hover { color: var(--blue); }
.contact__list a:hover::after { transform: scaleX(1); transform-origin: left; }

/* ---------- 16. 页脚 ---------- */
.footer {
  background: var(--navy-2);
  color: rgba(255, 255, 255, 0.6);
  padding: clamp(56px, 7vw, 88px) 0 30px;
  position: relative;
  z-index: 2;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.3fr 1.7fr;
  gap: 56px;
  padding-bottom: 52px;
  border-bottom: 1px solid var(--line-dark);
}
.footer__logo {
  width: 132px;
  filter: brightness(0) invert(1);
  opacity: 0.92;
}
.footer__tagline {
  margin-top: 22px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 20px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.42);
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.footer__cols h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.32);
  margin-bottom: 20px;
}
.footer__cols a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  width: fit-content;
  transition: color 0.25s ease, transform 0.35s var(--ease);
}
.footer__cols a:hover { color: var(--yellow); transform: translateX(4px); }

.footer__legal { padding-top: 26px; }
.footer__disclaimer {
  font-size: 11.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.3);
  max-width: 82ch;
  margin-bottom: 20px;
}
.footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.3);
}
.footer__links { display: flex; gap: 24px; }
.footer__links a { transition: color 0.25s ease; }
.footer__links a:hover { color: var(--yellow); }

/* ---------- 17. Reveal ---------- */
.reveal {
  opacity: 0;
  translate: 0 26px;
  transition: opacity 0.9s var(--ease-out), translate 0.9s var(--ease-out);
  transition-delay: calc(var(--d, 0) * 90ms);
}
.reveal[data-delay="1"] { --d: 1; }
.reveal[data-delay="2"] { --d: 2; }
.reveal[data-delay="3"] { --d: 3; }
.reveal[data-delay="4"] { --d: 4; }
.reveal[data-delay="5"] { --d: 5; }
.reveal.is-in { opacity: 1; translate: 0 0; }

/* 文字逐行上浮 */
.line-mask { overflow: hidden; display: block; }
.line-mask > span {
  display: block;
  transform: translateY(105%);
  transition: transform 1s var(--ease-out);
  transition-delay: calc(var(--d, 0) * 110ms + 0.1s);
}
.is-in .line-mask > span,
.hero .line-mask > span { transform: translateY(0); }

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1180px) {
  .nav__links { display: none; }
  .nav__toggle { display: flex; }
  .nav__right { margin-left: auto; }

  .series__grid { grid-template-columns: repeat(2, 1fr); }
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .pillar:nth-child(2) { border-right: none; }
  .pillar:nth-child(1),
  .pillar:nth-child(2) { border-bottom: 1px solid var(--line); }
  .channels { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 980px) {
  :root { --pad: 24px; --nav-h: 72px; }

  .hero { min-height: auto; padding: calc(var(--nav-h) + 48px) 0 0; flex-direction: column; align-items: stretch; }
  .hero__inner { grid-template-columns: 1fr; gap: 56px; }
  .hero__showcase { order: -1; min-height: 340px; }
  .hero__product { width: min(70%, 260px); }
  .hero__product.hero__product--back { width: min(30%, 130px); right: 8%; bottom: 2%; }
  .hero__statbadge { left: 4%; bottom: 0; padding: 13px 17px; }
  .hero__statbadge b { font-size: 24px; }
  .hero__meta { position: static; margin-top: 56px; }

  .star__grid { grid-template-columns: 1fr; }
  .star__head { grid-template-columns: 1fr; gap: 20px; align-items: start; }

  .tech__grid { grid-template-columns: 1fr; }
  .tech__visual { order: -1; }
  .tech__img { width: min(62%, 270px); }

  .contact__grid { grid-template-columns: 1fr; gap: 40px; }
  .footer__top { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }

  .hero__title { font-size: clamp(32px, 9.4vw, 44px); }
  .hero__cta { width: 100%; }
  .hero__cta .btn { flex: 1; }
  .hero__product { width: min(78%, 240px); }
  .hero__meta-inner { flex-direction: column; gap: 8px; }
  .nav__right > .btn { display: none; }
  .nav__right { gap: 12px; }

  .trust__grid { grid-template-columns: repeat(2, 1fr); }
  .trust__item:nth-child(2) { border-right: none; }
  .trust__item:nth-child(1),
  .trust__item:nth-child(2) { border-bottom: 1px solid var(--line-2); }
  .trust__item { padding: 26px 20px; }

  .series__grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .seriescard { aspect-ratio: 3 / 4.2; padding: 18px 16px; }
  .seriescard h3 { font-size: 15px; }
  .seriescard p { display: none; }
  .seriescard__count { font-size: 9px; }

  .pillars { grid-template-columns: 1fr; }
  .pillar { border-right: none; border-bottom: 1px solid var(--line); padding: 30px 22px 34px; }
  .pillar:last-child { border-bottom: none; }

  .channels { grid-template-columns: 1fr; }
  .channel { min-height: 0; }

  .contact__list li { flex-direction: column; gap: 5px; }
  .contact__label { width: auto; }

  .footer__cols { grid-template-columns: repeat(2, 1fr); }

  .age-gate__num { font-size: 64px; }
  .age-gate__logo { width: 118px; margin-bottom: 32px; }
  .hero__statbadge { left: 0; right: auto; bottom: 4%; }
}

@media (max-width: 400px) {
  .hero__title { font-size: 29px; }
  .sec-title { font-size: 26px; }
  .series__grid { grid-template-columns: 1fr; }
  .seriescard { aspect-ratio: 4 / 3.4; }
}

/* ---------- 19. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; translate: 0 0; }
  .line-mask > span { transform: none; }
  .hl::after { transform: skewX(-5deg) scaleX(1); }
}

/* ---------- 20. 首页检测报告 ---------- */
.reports {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.4vw, 32px);
}
.report {
  position: relative;
  display: flex;
  flex-direction: column;
  text-align: left;
  padding: clamp(20px, 2.4vw, 32px);
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  cursor: zoom-in;
  overflow: hidden;
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease), border-color 0.4s ease;
}
.report:hover {
  transform: translateY(-6px);
  border-color: rgba(24, 120, 200, 0.3);
  box-shadow: 0 30px 60px -34px rgba(14, 26, 38, 0.38);
}
/* 纸张：微微倾斜叠在卡片上，悬停时摆正 */
.report__paper {
  display: block;
  position: relative;
  aspect-ratio: 1 / 1.1;
  overflow: hidden;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 1px 2px rgba(0,0,0,0.06), 0 18px 34px -18px rgba(14, 26, 38, 0.35);
  rotate: -1.6deg;
  transition: rotate 0.6s var(--ease), box-shadow 0.6s var(--ease);
}
.report:nth-child(2) .report__paper { rotate: 1.2deg; }
.report:nth-child(3) .report__paper { rotate: -0.8deg; }
.report:hover .report__paper { rotate: 0deg; box-shadow: 0 1px 2px rgba(0,0,0,0.06), 0 26px 44px -18px rgba(14, 26, 38, 0.45); }
.report__paper img { width: 100%; height: auto; display: block; transition: transform 0.8s var(--ease); }
.report:hover .report__paper img { transform: scale(1.03); }

.report__meta { display: grid; gap: 6px; margin-top: 24px; }
.report__lab {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}
.report__res {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.6vw, 20px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.report code {
  justify-self: start;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 5px;
  background: var(--white);
  border: 1px solid var(--line-2);
  color: var(--ink-2);
}
.report__zoom {
  position: absolute;
  top: clamp(28px, 3vw, 44px);
  right: clamp(28px, 3vw, 44px);
  padding: 6px 12px;
  border-radius: 100px;
  background: var(--navy);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  opacity: 0;
  translate: 0 -6px;
  transition: opacity 0.3s ease, translate 0.3s var(--ease);
  z-index: 3;
}
.report:hover .report__zoom, .report:focus-visible .report__zoom { opacity: 1; translate: 0 0; }

.reports__note {
  margin-top: 28px;
  font-size: 12px;
  color: var(--ink-3);
  text-align: center;
}

/* 放大查看 */
.lightbox {
  width: min(92vw, 760px);
  max-height: 92vh;
  padding: 0;
  border: none;
  border-radius: var(--r-md);
  background: #fff;
  overflow: auto;
  box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.6);
}
.lightbox::backdrop { background: rgba(7, 21, 37, 0.82); backdrop-filter: blur(6px); }
.lightbox[open] { animation: lbIn 0.45s var(--ease-out); }
@keyframes lbIn { from { opacity: 0; scale: 0.94; } to { opacity: 1; scale: 1; } }
.lightbox img { width: 100%; height: auto; display: block; }
.lightbox__close {
  position: sticky;
  top: 12px;
  float: right;
  margin: 12px 12px -52px 0;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  font-size: 22px;
  line-height: 1;
  z-index: 2;
}

@media (max-width: 900px) {
  .reports { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
}

/* ---------- 21. 信任条图标 ---------- */
.trust__item {
  grid-template-columns: auto 1fr;
  column-gap: 16px;
  align-items: center;
}
.trust__icon {
  grid-row: span 2;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--blue-soft);
  color: var(--blue);
  transition: background 0.35s ease, color 0.35s ease, transform 0.45s var(--ease);
}
.trust__icon svg { width: 24px; height: 24px; }
.trust__item--accent .trust__icon { background: var(--yellow); color: var(--navy); }
.trust__item:hover .trust__icon { background: var(--blue); color: var(--white); transform: translateY(-3px) rotate(-6deg); }
.trust__item--accent:hover .trust__icon { background: var(--navy); color: var(--yellow); }
.trust__item b { align-self: end; }
.trust__item > span:not(.trust__icon) { align-self: start; }

@media (max-width: 640px) {
  .trust__icon { width: 40px; height: 40px; border-radius: 12px; }
  .trust__icon svg { width: 20px; height: 20px; }
  .trust__item { column-gap: 12px; }
}

/* ---------- 22. 购买渠道：平台官方图标 ---------- */
.channel__app {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  overflow: hidden;
  box-shadow: 0 10px 22px -12px rgba(0, 0, 0, 0.6);
}
.channel__app--wechat { background: #07C160; color: #FFFFFF; }
.channel__app--wechat svg { width: 30px; height: 30px; }
.channel__app--logo { background: #FFFFFF; padding: 6px; }
.channel__app--logo img { width: 100%; height: 100%; object-fit: contain; }
.channel:hover .channel__app { transform: translateY(-2px); transition: transform 0.35s var(--ease); }
/* 京东：红底 + 白色 Joy（裁掉下方 JD.COM 字样）；天猫：红底 + 反白字标 */
.channel__app--jd { background: #E1251B; position: relative; }
.channel__app--jd img {
  position: absolute;
  top: 10%;
  left: 50%;
  width: auto;
  height: 145%;
  max-width: none;
  translate: -50% 0;
}
.channel__app--tmall { background: #FF0036; padding: 9px; }
.channel__app--tmall img { width: 100%; height: 100%; object-fit: contain; filter: brightness(0) invert(1); }
.channel__app--phone { background: var(--yellow); color: var(--navy); }
.channel__app--phone svg { width: 26px; height: 26px; }
/* 平台官方 App 图标：图片自带圆角与底色，直接铺满 */
.channel__app--img { background: none; padding: 0; border-radius: 12px; }
.channel__app--img img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ---------- 23. 系列卡：产品图放在卡片上部，不再压到标题 ---------- */
.seriescard__img {
  inset: 0 0 auto 0;
  height: 62%;
  padding: 26px 26px 0;
}
.seriescard__img img { object-position: center center; }
/* 底部渐隐只需覆盖文字区，避免把产品洗白 */
.seriescard__veil {
  background: linear-gradient(to top, rgba(255,255,255,1) 0%, rgba(255,255,255,0.9) 30%, rgba(255,255,255,0) 42%);
}
@media (max-width: 640px) {
  .seriescard__img { height: 64%; padding: 16px 16px 0; }
}