/* =========================================================
   Innotronia — main stylesheet
   Palette: deep ink base + vivid violet / magenta / amber accents
   ========================================================= */

/* self-hosted fonts (no Google Fonts: faster in mainland China) */
@font-face { font-family: "Fraunces"; font-style: normal; font-weight: 300; font-display: swap; src: url("../fonts/fraunces-latin-300-normal.woff2") format("woff2"); }
@font-face { font-family: "Fraunces"; font-style: italic; font-weight: 300; font-display: swap; src: url("../fonts/fraunces-latin-300-italic.woff2") format("woff2"); }
@font-face { font-family: "Fraunces"; font-style: normal; font-weight: 400; font-display: swap; src: url("../fonts/fraunces-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Fraunces"; font-style: italic; font-weight: 400; font-display: swap; src: url("../fonts/fraunces-latin-400-italic.woff2") format("woff2"); }
@font-face { font-family: "Fraunces"; font-style: normal; font-weight: 500 600; font-display: swap; src: url("../fonts/fraunces-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400; font-display: swap; src: url("../fonts/inter-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 500; font-display: swap; src: url("../fonts/inter-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/inter-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 700; font-display: swap; src: url("../fonts/inter-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 800; font-display: swap; src: url("../fonts/inter-latin-800-normal.woff2") format("woff2"); }

:root {
  --bg: #06060c;
  --bg-2: #0a0a14;
  --bg-3: #11111f;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-2: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.18);
  --text: #f4f2fb;
  --muted: #a3a1b8;
  --dim: #6f6d85;

  --violet: #8b6cff;
  --blue: #4f8bff;
  --pink: #ff3d8b;
  --amber: #ffa24a;
  --teal: #2ee6d6;
  --yellow: #ffd84a;

  --accent: #ff5fa2;          /* single-colour accent for small UI */
  --accent-soft: rgba(255, 61, 139, 0.12);
  --grad: linear-gradient(100deg, var(--violet) 0%, var(--pink) 52%, var(--amber) 100%);
  --grad-soft: linear-gradient(100deg, rgba(139,108,255,.18), rgba(255,61,139,.14) 52%, rgba(255,162,74,.14));
  --danger: #ff7a6b;

  --serif: "Fraunces", Georgia, "Songti SC", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;

  --radius: 22px;
  --radius-sm: 14px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --container: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: var(--pink); color: #fff; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.muted { color: var(--muted); }
.nw { white-space: nowrap; }

em, .grad-text {
  font-style: italic; font-weight: 400;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  padding-right: .06em;
}
html[lang="zh"] em { font-style: normal; font-weight: inherit; }

/* ---------- ambient ---------- */
.cursor-glow {
  position: fixed; top: 0; left: 0; width: 640px; height: 640px; margin: -320px 0 0 -320px;
  background: radial-gradient(circle, rgba(139, 108, 255, 0.10), rgba(255, 61, 139, 0.05) 35%, transparent 62%);
  pointer-events: none; z-index: 0; transform: translate3d(-1000px, -1000px, 0);
}
@media (hover: none) { .cursor-glow { display: none; } }
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 100; opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- type ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--accent);
  margin: 0 0 22px; font-weight: 600;
}
html[lang="zh"] .eyebrow { letter-spacing: .12em; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--grad); box-shadow: 0 0 0 4px var(--accent-soft), 0 0 14px var(--pink); }

.section { position: relative; padding: clamp(90px, 11vw, 150px) 0; z-index: 1; }
.section__head { max-width: 780px; margin-bottom: clamp(48px, 6vw, 72px); }
.section__head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section__title {
  font-family: var(--serif); font-weight: 300; font-size: clamp(36px, 5.2vw, 64px);
  line-height: 1.06; letter-spacing: -.025em; margin: 0;
}
html[lang="zh"] .section__title { font-family: var(--sans); font-weight: 700; letter-spacing: 0; line-height: 1.25; font-size: clamp(30px, 4.4vw, 52px); }
.section__lead { color: var(--muted); font-size: clamp(16px, 1.4vw, 18px); margin: 22px 0 0; max-width: 640px; }
.section__head--center .section__lead { margin-left: auto; margin-right: auto; }
.h3 { font-family: var(--serif); font-weight: 300; font-size: clamp(28px, 3.2vw, 42px); line-height: 1.15; margin: 0 0 16px; letter-spacing: -.01em; }
html[lang="zh"] .h3 { font-family: var(--sans); font-weight: 700; }

/* ---------- buttons ---------- */
.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 15px 28px; border-radius: 999px; font-size: 14px; font-weight: 600; letter-spacing: .01em;
  transition: background-position .6s var(--ease), color .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease), transform .35s var(--ease);
  white-space: nowrap; will-change: transform;
}
.btn--sm { padding: 10px 20px; font-size: 13px; }
.btn--block { width: 100%; }
.btn--grad {
  color: #fff; background: linear-gradient(100deg, var(--violet), var(--pink) 45%, var(--amber) 90%, var(--pink));
  background-size: 200% 100%; background-position: 0% 0;
  box-shadow: 0 10px 30px -10px rgba(255, 61, 139, .7), inset 0 1px 0 rgba(255,255,255,.25);
}
.btn--grad:hover { background-position: 60% 0; box-shadow: 0 16px 44px -10px rgba(255, 61, 139, .9), inset 0 1px 0 rgba(255,255,255,.25); }
.btn--ghost { border: 1px solid var(--line-2); color: var(--text); background: rgba(255,255,255,.03); backdrop-filter: blur(8px); }
.btn--ghost:hover { border-color: var(--pink); box-shadow: 0 0 0 1px var(--pink) inset, 0 10px 30px -12px rgba(255,61,139,.6); }
.btn--text { padding: 12px 6px; color: var(--muted); }
.btn--text:hover { color: var(--text); }
.btn:focus-visible, .tab:focus-visible, .step:focus-visible, .st__btn:focus-visible, a:focus-visible, summary:focus-visible { outline: 2px solid var(--pink); outline-offset: 3px; }
.btn[disabled] { opacity: .5; pointer-events: none; }

/* ---------- nav ---------- */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; transition: background .4s, border-color .4s; border-bottom: 1px solid transparent; }
.nav.is-scrolled { background: rgba(6, 6, 12, .72); backdrop-filter: blur(18px) saturate(160%); -webkit-backdrop-filter: blur(18px) saturate(160%); border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 12px; }
.logo__img { display: block; height: 52px; width: auto; }
@media (max-width: 600px) { .nav .logo__img { height: 44px; } }
.footer .logo__img { height: 52px; }
.page-nav .logo__img, .nf .logo__img { height: 40px; }
.logo__text { font-family: var(--serif); font-size: 22px; font-weight: 400; letter-spacing: .01em; }
.nav__links { display: flex; gap: 34px; font-size: 14px; }
.nav__links a { color: var(--muted); position: relative; transition: color .3s; }
.nav__links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; border-radius: 2px; background: var(--grad); transform: scaleX(0); transform-origin: right; transition: transform .4s var(--ease); }
.nav__links a:hover, .nav__links a.is-current { color: var(--text); }
.nav__links a:hover::after, .nav__links a.is-current::after { transform: scaleX(1); transform-origin: left; }
.nav__actions { display: flex; align-items: center; gap: 14px; }
.lang-toggle { font-size: 13px; color: var(--dim); padding: 8px 12px; border-radius: 999px; border: 1px solid var(--line); display: inline-flex; gap: 6px; transition: border-color .3s; }
.lang-toggle:hover { border-color: var(--line-2); }
.lang-toggle [data-lang].is-on { color: var(--text); font-weight: 600; }
.lang-toggle__sep { opacity: .4; }
.burger { display: none; width: 40px; height: 40px; position: relative; }
.burger span { position: absolute; left: 10px; right: 10px; height: 1.5px; background: var(--text); transition: transform .4s var(--ease), top .4s var(--ease); }
.burger span:first-child { top: 16px; }
.burger span:last-child { top: 23px; }
.burger[aria-expanded="true"] span:first-child { top: 19.5px; transform: rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { top: 19.5px; transform: rotate(-45deg); }
.mobile-menu { display: none; }

@media (max-width: 960px) {
  .nav__links, .nav__actions > .btn { display: none; }
  .burger { display: block; }
  .mobile-menu {
    display: flex; flex-direction: column; gap: 6px; padding: 0 var(--gutter);
    max-height: 0; overflow: hidden; background: rgba(6, 6, 12, .96); backdrop-filter: blur(18px);
    transition: max-height .5s var(--ease), padding .5s var(--ease);
  }
  .mobile-menu.is-open { max-height: 480px; padding: 12px var(--gutter) 28px; border-bottom: 1px solid var(--line); }
  .mobile-menu a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 17px; }
  .mobile-menu .btn { margin-top: 16px; }
}

/* ---------- hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center; padding: 130px 0 90px; overflow: hidden; }
.aurora { position: absolute; inset: 0; pointer-events: none; filter: blur(70px) saturate(140%); opacity: .75; }
.aurora__b { position: absolute; border-radius: 50%; mix-blend-mode: screen; animation: drift 18s ease-in-out infinite alternate; }
.aurora__b--1 { width: 46vw; height: 46vw; right: 2vw; top: -10vw; background: radial-gradient(circle, rgba(139,108,255,.55), transparent 65%); }
.aurora__b--2 { width: 38vw; height: 38vw; right: 22vw; top: 22vh; background: radial-gradient(circle, rgba(255,61,139,.42), transparent 65%); animation-delay: -6s; animation-duration: 22s; }
.aurora__b--3 { width: 34vw; height: 34vw; right: -6vw; bottom: -8vw; background: radial-gradient(circle, rgba(255,162,74,.35), transparent 65%); animation-delay: -12s; animation-duration: 26s; }
@keyframes drift { 0% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(-4vw, 3vw, 0) scale(1.1); } 100% { transform: translate3d(3vw, -2vw, 0) scale(.95); } }
.hero__globe { position: absolute; top: 50%; right: -6vw; width: min(60vw, 820px); height: min(60vw, 820px); transform: translateY(-50%); }
.hero__fade { position: absolute; inset: auto 0 0; height: 220px; background: linear-gradient(transparent, var(--bg)); pointer-events: none; }
.hero__content { position: relative; z-index: 2; }
.hero__title {
  font-family: var(--serif); font-weight: 300; font-size: clamp(40px, 6vw, 88px); line-height: 1.02; letter-spacing: -.035em;
  margin: 0; max-width: none;
}
html[lang="zh"] .hero__title { font-family: var(--sans); font-weight: 700; letter-spacing: 0; line-height: 1.2; max-width: none; font-size: clamp(30px, 8.2vw, 80px); }
.hero__lead { color: var(--muted); font-size: clamp(16px, 1.5vw, 19px); max-width: 600px; margin: 30px 0 24px; }
.hero__points { list-style: none; margin: 0 0 36px; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; max-width: 640px; }
.hero__points li { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px 8px 10px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--text); background: rgba(255,255,255,.05); border: 1px solid var(--line-2); backdrop-filter: blur(8px); }
.hero__points svg { width: 18px; height: 18px; padding: 3px; border-radius: 50%; color: #fff; background: var(--grad); flex: none; }
.hero__ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__stats { display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: 18px 56px; margin: 72px 0 0; padding-top: 32px; border-top: 1px solid var(--line); max-width: 760px; }
.hero__stats dt { font-family: var(--serif); font-size: 40px; font-weight: 400; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; display: inline-block; }
.hero__stats dd { margin: 10px 0 0; font-size: 13px; color: var(--muted); }
@media (max-width: 960px) {
  .hero__globe { right: -40vw; width: 110vw; height: 110vw; opacity: .5; top: 38%; }
  .aurora__b--1 { width: 90vw; height: 90vw; }
  .aurora__b--2 { width: 70vw; height: 70vw; }
}
@media (max-width: 640px) { .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; } }
.scroll-cue { position: absolute; left: 50%; bottom: 28px; width: 24px; height: 38px; margin-left: -12px; border: 1px solid var(--line-2); border-radius: 14px; z-index: 2; }
.scroll-cue span { position: absolute; left: 50%; top: 8px; width: 2px; height: 7px; margin-left: -1px; background: var(--pink); border-radius: 2px; animation: cue 2s var(--ease) infinite; }
@keyframes cue { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ---------- platform logo wall ---------- */
.platforms { position: relative; z-index: 1; padding: 20px 0 clamp(70px, 8vw, 100px); }
.platforms__label { text-align: center; margin: 0 0 28px; font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
html[lang="zh"] .platforms__label { letter-spacing: .12em; }
.logo-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 1100px) { .logo-wall { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 600px) { .logo-wall { grid-template-columns: repeat(2, 1fr); gap: 10px; } }
.plogo {
  position: relative; height: 104px; border-radius: 18px; background: #fff; color: #111;
  display: flex; align-items: center; justify-content: center; gap: 8px; padding: 0 16px;
  box-shadow: 0 1px 0 rgba(255,255,255,.6) inset, 0 20px 40px -24px rgba(0,0,0,.9);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}
.plogo:hover { transform: translateY(-6px); box-shadow: 0 0 0 2px rgba(255,61,139,.9), -14px 18px 40px -14px rgba(139,108,255,.9), 14px 18px 40px -14px rgba(255,162,74,.9); }
.plogo__amazon { position: absolute; left: 50%; top: 56%; width: 92px; height: auto; transform: translateX(-46%); }
.plogo__word--amazon { margin-top: -12px; }
.plogo__walmart { width: 128px; height: auto; }
.plogo__icon { width: 30px; height: 30px; }
.plogo__word { font-family: "Inter", sans-serif; font-weight: 800; letter-spacing: -.03em; line-height: 1; }
.plogo__word--amazon { font-size: 28px; color: #131921; letter-spacing: -.05em; }
.plogo__word--wayfair { font-size: 25px; color: #7b189f; font-weight: 700; }
.plogo__word--shein { font-size: 28px; color: #111; letter-spacing: .08em; font-weight: 800; }
.plogo__word--overstock { font-size: 25px; color: #c8102e; letter-spacing: -.03em; }
.plogo__word--tiktok { font-size: 21px; color: #111; letter-spacing: -.02em; }
.plogo__word--tiktok small { font-weight: 600; color: #fe2c55; font-size: .85em; }
.plogo__tiktok svg { width: 26px; height: 26px; overflow: visible; }
.plogo__temu { font-family: "Inter", sans-serif; font-weight: 800; font-size: 20px; letter-spacing: .02em; color: #fff; background: #fb7701; padding: 10px 14px; border-radius: 11px; line-height: 1; }
.plogo--more { background: rgba(255,255,255,.04); color: var(--text); border: 1px dashed var(--line-2); box-shadow: none; justify-content: flex-start; gap: 12px; }
.plogo--more span:last-child { display: flex; flex-direction: column; line-height: 1.3; }
.plogo--more strong { font-size: 14px; font-weight: 600; }
.plogo--more small { font-size: 12px; color: var(--accent); }
.plogo__plus { width: 34px; height: 34px; flex: none; border-radius: 50%; display: grid; place-items: center; background: var(--grad); color: #fff; font-size: 20px; font-weight: 500; }

@media (max-width: 600px) { .plogo { height: 84px; } .plogo__word--amazon, .plogo__word--shein { font-size: 24px; } .plogo__walmart { width: 110px; } }

/* ---------- client brands marquee ---------- */
.brands { position: relative; z-index: 1; padding: 52px 0 60px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.brands__label { text-align: center; margin: 0 0 26px; font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee__track { display: flex; width: max-content; animation: marquee 32s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__track { padding: 6px 0; }
.clogo {
  flex: none; width: 210px; height: 104px; margin-right: 16px; border-radius: 18px; background: #fff;
  display: grid; place-items: center; padding: 16px 22px;
  box-shadow: 0 20px 40px -24px rgba(0,0,0,.9); transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}
.clogo:hover { transform: translateY(-4px); box-shadow: 0 0 0 2px rgba(255,61,139,.9), 0 18px 40px -14px rgba(139,108,255,.8); }
.clogo img { max-width: 100%; width: auto; object-fit: contain; }
.clogo--snp img { height: 46px; }
.clogo--rom img { height: 76px; }
.clogo--celavi img { height: 52px; }
.clogo--delxo img { height: 32px; }
.clogo--acko img { height: 50px; }
.clogo--halulu img { height: 74px; }
.clogo--lexvss img { height: 82px; }
.clogo--text { font-family: var(--serif); font-size: 30px; font-weight: 400; color: #1a1a24; letter-spacing: .01em; }
@media (max-width: 600px) { .clogo { width: 160px; height: 84px; padding: 12px 16px; } .clogo--rom img, .clogo--halulu img, .clogo--lexvss img { height: 62px; } .clogo--text { font-size: 24px; } }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- pillars ---------- */
.pillars__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 960px) { .pillars__grid { grid-template-columns: 1fr; } }
.pillar {
  --c: var(--violet);
  position: relative; display: block; padding: clamp(30px, 3.4vw, 44px); border-radius: var(--radius); border: 1px solid var(--line);
  background: radial-gradient(120% 90% at 0% 0%, color-mix(in srgb, var(--c) 22%, transparent), transparent 55%), linear-gradient(160deg, rgba(255,255,255,.045), rgba(255,255,255,.01));
  overflow: hidden; transition: border-color .5s var(--ease), transform .5s var(--ease);
}
.pillar--violet { --c: var(--violet); }
.pillar--pink { --c: var(--pink); }
.pillar--amber { --c: var(--amber); }
.pillar::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .5s;
  background: radial-gradient(500px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--c) 25%, transparent), transparent 45%);
}
.pillar:hover { border-color: color-mix(in srgb, var(--c) 60%, transparent); }
.pillar:hover::before { opacity: 1; }
.pillar__num { font-family: var(--serif); font-size: 15px; color: var(--c); letter-spacing: .1em; font-weight: 500; }
.pillar h3 { font-family: var(--serif); font-weight: 400; font-size: clamp(26px, 2.6vw, 34px); margin: 48px 0 14px; line-height: 1.1; }
html[lang="zh"] .pillar h3 { font-family: var(--sans); font-weight: 700; }
.pillar p { color: var(--muted); margin: 0 0 26px; }
.pillar__tags { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.pillar__tags li { font-size: 12px; padding: 6px 12px; border-radius: 999px; border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); color: var(--text); background: color-mix(in srgb, var(--c) 10%, transparent); }
.pillar__arrow { position: absolute; top: clamp(30px, 3.4vw, 44px); right: clamp(30px, 3.4vw, 44px); width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; font-size: 18px; color: #fff; background: var(--c); box-shadow: 0 8px 24px -6px var(--c); transition: transform .5s var(--ease); }
.pillar:hover .pillar__arrow { transform: translateX(4px) rotate(-45deg); }

/* ---------- services ---------- */
.services { background: linear-gradient(var(--bg), var(--bg-2)); }
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 1100px) { .svc-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .svc-grid { grid-template-columns: 1fr; } }
.svc {
  --c: var(--violet);
  position: relative; display: block; padding: 28px 26px 30px; border-radius: var(--radius); border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.012)); overflow: hidden;
  transition: transform .5s var(--ease), border-color .4s, background .4s;
}
.svc::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--c); opacity: .0; transition: opacity .4s; }
.svc::after { content: ""; position: absolute; width: 220px; height: 220px; right: -90px; top: -90px; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--c) 30%, transparent), transparent 70%); opacity: .5; transition: opacity .4s, transform .6s var(--ease); pointer-events: none; }
.svc:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--c) 50%, transparent); }
.svc:hover::before { opacity: 1; }
.svc:hover::after { opacity: 1; transform: scale(1.2); }
.svc__icon { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; color: var(--c); background: color-mix(in srgb, var(--c) 14%, transparent); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); }
.svc__icon svg { width: 24px; height: 24px; }
.svc h3 { font-size: 18px; font-weight: 600; margin: 22px 0 14px; line-height: 1.3; }
.svc ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.svc li { position: relative; padding-left: 18px; font-size: 14px; color: var(--muted); line-height: 1.5; }
.svc li::before { content: ""; position: absolute; left: 0; top: .6em; width: 6px; height: 6px; border-radius: 50%; background: var(--c); box-shadow: 0 0 8px var(--c); }
.svc--addon { border-color: transparent; background: linear-gradient(var(--bg-2), var(--bg-2)) padding-box, var(--grad) border-box; border: 1px solid transparent; }
.svc--addon:hover { border-color: transparent; }
.svc__badge { position: absolute; top: 22px; right: 20px; font-size: 11px; font-weight: 700; padding: 5px 10px; border-radius: 999px; background: var(--grad); color: #fff; letter-spacing: .02em; }

.process { display: grid; grid-template-columns: 1fr 1.6fr; gap: clamp(32px, 6vw, 96px); margin-top: clamp(80px, 10vw, 130px); align-items: start; }
@media (max-width: 900px) { .process { grid-template-columns: 1fr; } }
.process > *, .process__body > * { min-width: 0; }
.process__intro { position: sticky; top: 120px; }
@media (max-width: 900px) { .process__intro { position: static; } }
.process__body { display: grid; grid-template-columns: 260px 1fr; gap: 24px; }
@media (max-width: 700px) { .process__body { grid-template-columns: 1fr; } }
.steps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
@media (max-width: 700px) {
  .steps { flex-direction: row; overflow-x: auto; gap: 8px; scrollbar-width: none; padding-bottom: 4px; }
  .steps::-webkit-scrollbar { display: none; }
}
.step {
  width: 100%; display: flex; align-items: center; gap: 16px; padding: 15px 18px; border-radius: var(--radius-sm);
  text-align: left; color: var(--muted); font-size: 15px; transition: background .3s, color .3s; position: relative;
}
.step::before { content: ""; position: absolute; left: 0; top: 50%; width: 3px; height: 0; border-radius: 3px; background: var(--grad); transform: translateY(-50%); transition: height .4s var(--ease); }
.step:hover { color: var(--text); background: var(--surface); }
.step.is-active { color: var(--text); background: var(--surface-2); }
.step.is-active::before { height: 60%; }
.step__n { font-family: var(--serif); font-size: 13px; color: var(--accent); }
@media (max-width: 700px) {
  .step { white-space: nowrap; border: 1px solid var(--line); border-radius: 999px; padding: 10px 16px; }
  .step::before { display: none; }
  .step.is-active { border-color: var(--pink); }
}
.step-panel {
  position: relative; padding: clamp(28px, 4vw, 44px); border-radius: var(--radius); border: 1px solid var(--line);
  background: radial-gradient(120% 100% at 100% 0%, rgba(255,61,139,.14), transparent 55%), radial-gradient(90% 80% at 0% 100%, rgba(139,108,255,.14), transparent 55%), var(--surface); min-height: 320px;
  display: flex; flex-direction: column;
}
.step-panel__n { font-family: var(--serif); font-size: 96px; line-height: 1; font-weight: 400; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: auto; width: fit-content; }
.step-panel h4 { font-family: var(--serif); font-weight: 400; font-size: 28px; margin: 28px 0 10px; }
html[lang="zh"] .step-panel h4 { font-family: var(--sans); font-weight: 700; }
.step-panel p { color: var(--muted); margin: 0; }
.step-panel__bar { height: 3px; background: var(--line); margin-top: 28px; border-radius: 3px; overflow: hidden; }
.step-panel__bar span { display: block; height: 100%; background: var(--grad); width: 0; transition: width .6s var(--ease); }
.step-panel.is-swapping h4, .step-panel.is-swapping p, .step-panel.is-swapping .step-panel__n { opacity: 0; transform: translateY(8px); }
.step-panel h4, .step-panel p, .step-panel__n { transition: opacity .35s var(--ease), transform .35s var(--ease); }

/* ---------- strategy ---------- */
.strategy { overflow: hidden; }
.strategy::before { content: ""; position: absolute; left: 50%; top: 45%; width: 1000px; height: 600px; transform: translate(-50%, -50%); background: radial-gradient(closest-side, var(--st-glow, rgba(139,108,255,.22)), transparent); transition: background 1s; pointer-events: none; }
.st { position: relative; max-width: 1000px; margin: 0 auto; }
.st__switch { display: flex; justify-content: center; gap: 8px; margin: 0 auto 26px; padding: 6px; width: fit-content; max-width: 100%; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); flex-wrap: wrap; }
.st__btn { display: inline-flex; align-items: center; gap: 10px; padding: 12px 22px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--muted); transition: background .4s, color .3s, box-shadow .4s; }
.st__btn:hover { color: var(--text); }
.st__btn.is-active { color: #fff; background: var(--surface-2); box-shadow: 0 0 0 1px var(--line-2) inset; }
.st__dot { width: 10px; height: 10px; border-radius: 50%; background: var(--c); box-shadow: 0 0 12px var(--c); }
.st__panel { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 64px); padding: clamp(28px, 4vw, 52px); border-radius: 28px; border: 1px solid var(--line); background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015)); backdrop-filter: blur(10px); }
@media (max-width: 800px) { .st__panel { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .st__switch { display: grid; grid-template-columns: repeat(3, 1fr); width: 100%; gap: 4px; } .st__btn { justify-content: center; padding: 11px 6px; font-size: 13px; gap: 6px; } .st__dot { width: 8px; height: 8px; } }
.st__copy h3 { font-family: var(--serif); font-weight: 400; font-size: clamp(28px, 3vw, 38px); margin: 0 0 12px; line-height: 1.15; }
html[lang="zh"] .st__copy h3 { font-family: var(--sans); font-weight: 700; }
.st__copy > p { color: var(--muted); margin: 0 0 24px; }
.st__kpi, .st__best { display: flex; flex-direction: column; gap: 4px; padding: 14px 0; border-top: 1px solid var(--line); margin: 0 !important; }
.st__kpi span, .st__best span { font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--dim); font-weight: 600; }
.st__kpi strong, .st__best strong { font-weight: 500; color: var(--text); font-size: 15px; }
.st__meters { display: grid; gap: 22px; align-content: center; }
.meter__row { display: flex; justify-content: space-between; font-size: 14px; color: var(--muted); margin-bottom: 10px; }
.meter__v { font-style: normal; background: none; color: var(--text); font-weight: 600; -webkit-text-fill-color: currentColor; padding: 0; }
.meter__track { height: 10px; border-radius: 10px; background: rgba(255,255,255,.07); overflow: hidden; }
.meter__track span { display: block; height: 100%; width: 0; border-radius: 10px; background: var(--st-grad, var(--grad)); box-shadow: 0 0 18px var(--st-shadow, rgba(255,61,139,.5)); transition: width 1s var(--ease), background 1s; }
.st__panel.is-swapping .st__copy { opacity: 0; transform: translateY(6px); }
.st__copy { transition: opacity .3s var(--ease), transform .3s var(--ease); }

/* ---------- pricing ---------- */
.pricing { background: var(--bg-2); overflow: hidden; }
.pricing::before { content: ""; position: absolute; left: 50%; top: 0; width: 1000px; height: 600px; transform: translateX(-50%); background: radial-gradient(closest-side, rgba(255,61,139,.14), transparent); pointer-events: none; }
.plans { display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 20px; align-items: start; }
@media (max-width: 1060px) { .plans { grid-template-columns: 1fr 1fr; } .plan--featured { grid-column: 1 / -1; } }
@media (max-width: 700px) { .plans { grid-template-columns: 1fr; } }
.plan {
  position: relative; padding: clamp(28px, 3vw, 40px); border-radius: var(--radius); border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.012)); display: flex; flex-direction: column;
  transition: border-color .4s, transform .5s var(--ease);
}
.plan:hover { border-color: var(--line-2); transform: translateY(-4px); }
.plan--featured {
  border: 1.5px solid transparent;
  background:
    radial-gradient(120% 50% at 50% 0%, rgba(255,61,139,.22), transparent 60%) padding-box,
    linear-gradient(180deg, #14111f, #0d0c17) padding-box,
    var(--grad) border-box;
  box-shadow: 0 40px 100px -40px rgba(255,61,139,.45);
}
.plan--featured:hover { border-color: transparent; }
.plan__badge { position: absolute; top: 22px; right: 22px; font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; padding: 6px 12px; border-radius: 999px; background: var(--grad); color: #fff; }
.plan__kicker { margin: 0; font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.plan__name { font-family: var(--serif); font-weight: 400; font-size: 30px; margin: 10px 0 8px; }
html[lang="zh"] .plan__name { font-family: var(--sans); font-weight: 700; }
.plan__desc { color: var(--muted); margin: 0 0 26px; font-size: 15px; min-height: 3.2em; }
.plan__price { display: flex; align-items: baseline; gap: 4px; }
.plan__currency { font-family: var(--serif); font-size: 26px; color: var(--accent); align-self: flex-start; margin-top: 10px; }
.plan__amount { font-family: var(--serif); font-size: 66px; line-height: 1; font-weight: 400; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.plan--featured .plan__amount { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.plan__amount--text { font-size: 52px; }
html[lang="zh"] .plan__amount--text { font-family: var(--sans); font-weight: 700; font-size: 44px; }
.plan__per { color: var(--muted); font-size: 15px; margin-left: 6px; }
.plan__extra { color: var(--muted); font-size: 14px; margin: 10px 0 26px; }
.plan__extra strong { color: var(--text); font-weight: 600; }
.plan__list { list-style: none; padding: 26px 0 0; margin: 0 0 32px; border-top: 1px solid var(--line); display: grid; gap: 12px; font-size: 15px; flex: 1; }
.plan__list li { position: relative; padding-left: 30px; }
.plan__list li::before { content: ""; position: absolute; left: 0; top: .2em; width: 18px; height: 18px; border-radius: 50%; background: var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12.5l4 4L18 8' fill='none' stroke='%23ff5fa2' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 12px no-repeat; }
@media (min-width: 701px) and (max-width: 1060px) { .plan--featured .plan__list { grid-template-columns: 1fr 1fr; } }

.calc, .rev { padding: 22px; border-radius: var(--radius-sm); background: rgba(0,0,0,.3); border: 1px solid var(--line); margin-bottom: 28px; }
.calc__row { display: flex; justify-content: space-between; align-items: baseline; font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.calc__row output { font-family: var(--serif); font-size: 24px; color: var(--text); font-variant-numeric: tabular-nums; }
.calc__scale { display: flex; justify-content: space-between; font-size: 11px; color: var(--dim); margin-top: 8px; }
.calc__note { font-size: 13px; color: var(--muted); margin: 14px 0 0; min-height: 2.6em; }
.calc__note.is-custom { color: var(--accent); }
.calc__total { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--line-2); font-size: 14px; color: var(--muted); }
.calc__total strong { font-family: var(--serif); font-size: 26px; font-weight: 400; color: var(--text); font-variant-numeric: tabular-nums; }
.calc__fine { font-size: 12px; color: var(--dim); margin: 10px 0 0; }

.switch { display: flex; align-items: center; gap: 14px; margin-top: 16px; padding: 14px; border-radius: 12px; border: 1px solid var(--line); cursor: pointer; transition: border-color .3s, background .3s; }
.switch:hover { border-color: var(--line-2); }
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch__ui { position: relative; flex: none; width: 44px; height: 26px; border-radius: 26px; background: rgba(255,255,255,.12); transition: background .35s; }
.switch__ui::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: 0 2px 6px rgba(0,0,0,.4); transition: transform .35s var(--ease); }
.switch input:checked + .switch__ui { background: var(--grad); }
.switch input:checked + .switch__ui::after { transform: translateX(18px); }
.switch input:focus-visible + .switch__ui { outline: 2px solid var(--pink); outline-offset: 2px; }
.switch:has(input:checked) { border-color: rgba(255,61,139,.5); background: var(--accent-soft); }
.switch__text { display: flex; flex-direction: column; line-height: 1.35; }
.switch__text strong { font-size: 14px; font-weight: 600; }
.switch__text small { font-size: 12px; color: var(--muted); }

input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 22px; background: transparent; cursor: pointer; --p: 15%; }
input[type="range"]::-webkit-slider-runnable-track { height: 4px; border-radius: 4px; background: linear-gradient(90deg, var(--violet), var(--pink) calc(var(--p) * .7), var(--amber) var(--p), rgba(255,255,255,.12) var(--p)); }
input[type="range"]::-moz-range-track { height: 4px; border-radius: 4px; background: rgba(255,255,255,.12); }
input[type="range"]::-moz-range-progress { height: 4px; border-radius: 4px; background: var(--pink); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; margin-top: -9px; border-radius: 50%; background: #fff; border: 5px solid var(--pink); box-shadow: 0 4px 16px rgba(255,61,139,.7); transition: transform .2s; }
input[type="range"]::-moz-range-thumb { width: 12px; height: 12px; border-radius: 50%; background: #fff; border: 5px solid var(--pink); }
input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.15); }
input[type="range"]:focus-visible { outline: 2px solid var(--pink); outline-offset: 4px; border-radius: 4px; }

/* creative add-on */
.creative {
  position: relative; margin-top: 20px; padding: clamp(28px, 4vw, 52px); border-radius: 28px; overflow: hidden;
  display: grid; grid-template-columns: 1fr 1.35fr; gap: clamp(28px, 5vw, 64px); align-items: start;
  border: 1.5px solid transparent;
  background: linear-gradient(135deg, #150f24, #0d0b18 60%, #1a0f14) padding-box, var(--grad) border-box;
}
@media (max-width: 900px) { .creative { grid-template-columns: 1fr; } }
.creative__glow { position: absolute; inset: auto -10% -60% auto; width: 70%; height: 120%; background: radial-gradient(closest-side, rgba(255,61,139,.25), transparent); pointer-events: none; }
.creative__head, .creative__grid, .creative__note { position: relative; }
.creative__title { font-family: var(--serif); font-weight: 400; font-size: clamp(34px, 4vw, 52px); line-height: 1.05; margin: 10px 0 14px; }
html[lang="zh"] .creative__title { font-family: var(--sans); font-weight: 700; }
.creative__desc { color: var(--muted); margin: 0 0 22px; }
.creative__price { display: flex; align-items: baseline; gap: 4px; }
.creative__plus { font-family: var(--serif); font-size: 34px; color: var(--accent); }
.creative__amount { font-family: var(--serif); font-size: 64px; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.creative__fine { font-size: 13px; color: var(--dim); margin: 8px 0 24px; }
.creative__grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 520px) { .creative__grid { grid-template-columns: 1fr; } }
.creative__grid li { padding: 18px; border-radius: 16px; background: rgba(255,255,255,.04); border: 1px solid var(--line); display: flex; flex-direction: column; gap: 4px; transition: border-color .3s, transform .4s var(--ease); }
.creative__grid li:hover { border-color: var(--line-2); transform: translateY(-3px); }
.creative__grid strong { font-weight: 600; font-size: 15px; }
.creative__grid small { color: var(--muted); font-size: 13px; line-height: 1.45; }
.creative__ic { --c: var(--pink); font-family: var(--serif); font-size: 13px; color: var(--c); margin-bottom: 6px; font-weight: 600; }
.creative__note { grid-column: 1 / -1; margin: 0; padding: 14px 18px; border-radius: 12px; background: rgba(255,255,255,.035); border: 1px dashed var(--line-2); color: var(--muted); font-size: 13px; }

.terms { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 20px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
@media (max-width: 1240px) { .terms { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .terms { grid-template-columns: 1fr; } }
.term { display: flex; align-items: center; gap: 16px; padding: 24px; font-size: 14px; color: var(--muted); border-left: 1px solid var(--line); margin-left: -1px; border-top: 1px solid var(--line); margin-top: -1px; }
.term__k { flex: none; white-space: nowrap; padding-right: .08em; font-family: var(--serif); font-size: 30px; line-height: 1.1; min-width: 56px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* brand accelerator */
.accel {
  position: relative; margin-top: 20px; padding: clamp(28px, 4vw, 52px); border-radius: 28px; overflow: hidden;
  display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(28px, 5vw, 64px); align-items: center;
  border: 1.5px solid transparent;
  background: linear-gradient(135deg, #0d1622, #0b0b18 55%, #120d22) padding-box, linear-gradient(110deg, var(--teal), var(--blue) 45%, var(--violet)) border-box;
}
@media (max-width: 900px) { .accel { grid-template-columns: 1fr; } }
.accel__glow { position: absolute; left: -10%; top: -50%; width: 60%; height: 140%; background: radial-gradient(closest-side, rgba(46,230,214,.18), transparent); pointer-events: none; }
.accel__head, .accel__list { position: relative; }
.accel .plan__kicker { color: var(--teal); }
.accel__title { font-family: var(--serif); font-weight: 400; font-size: clamp(34px, 4vw, 52px); line-height: 1.05; margin: 10px 0 14px; }
.accel__title em { background: linear-gradient(100deg, var(--teal), var(--blue) 50%, var(--violet)); -webkit-background-clip: text; background-clip: text; }
html[lang="zh"] .accel__title { font-family: var(--sans); font-weight: 700; }
.accel__desc { color: var(--muted); margin: 0 0 18px; }
.accel__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.accel__tags span { font-size: 12.5px; font-weight: 600; padding: 6px 12px; border-radius: 999px; color: var(--teal); background: rgba(46,230,214,.1); border: 1px solid rgba(46,230,214,.3); }
.accel__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 560px) { .accel__list { grid-template-columns: 1fr; } }
.accel__list li { display: flex; gap: 14px; padding: 18px; border-radius: 16px; background: rgba(255,255,255,.04); border: 1px solid var(--line); transition: border-color .3s, transform .4s var(--ease); }
.accel__list li:hover { border-color: rgba(46,230,214,.4); transform: translateY(-3px); }
.accel__n { font-family: var(--serif); font-size: 13px; font-weight: 600; color: var(--teal); padding-top: 2px; }
.accel__list strong { display: block; font-weight: 600; font-size: 15.5px; margin-bottom: 4px; }
.accel__list small { color: var(--muted); font-size: 13px; line-height: 1.5; display: block; }

/* who pays what */
.pay { margin-top: 20px; padding: clamp(22px, 3vw, 32px); border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); }
.pay__lead { margin: -6px 0 16px; color: var(--muted); font-size: 14.5px; max-width: 760px; }
.pay__title { margin: 0 0 12px; font-size: 18px; font-weight: 600; }
.pay__scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.pay__table { width: 100%; min-width: 620px; border-collapse: collapse; font-size: 14px; }
.pay__table th, .pay__table td { text-align: left; padding: 13px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.pay__table thead th { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
html[lang="zh"] .pay__table thead th { letter-spacing: .04em; }
.pay__table tbody th { color: var(--text); font-weight: 600; width: 22%; }
.pay__table td { color: var(--muted); }
.pay__table tbody tr:last-child th, .pay__table tbody tr:last-child td { border-bottom: 0; }
.pay__table tbody tr:hover td, .pay__table tbody tr:hover th { background: rgba(255,255,255,.02); }
.pay__note { margin: 12px 0 0; font-size: 12.5px; color: var(--dim); }
.chips--wechat { margin: 16px 0 4px; }
.chips--wechat span { border-color: rgba(7,193,96,.45); }
.chips--wechat input:checked + span { border-color: #07c160; background: rgba(7,193,96,.16); color: #fff; }
.success__wechat { margin: -18px auto 26px !important; padding: 10px 16px; width: fit-content; max-width: 100%; border-radius: 12px; background: rgba(7,193,96,.12); border: 1px solid rgba(7,193,96,.4); color: #c8f5dc !important; font-size: 14px; }

/* ---------- logistics ---------- */
.log__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .log__grid { grid-template-columns: 1fr; } }
.log-card {
  --c: var(--teal);
  position: relative; padding: clamp(32px, 4vw, 48px); border-radius: var(--radius); border: 1px solid var(--line);
  background: radial-gradient(90% 70% at 100% 0%, color-mix(in srgb, var(--c) 18%, transparent), transparent 60%), var(--surface);
  overflow: hidden; transition: border-color .5s var(--ease), transform .5s var(--ease);
}
.log-card--a { --c: var(--teal); }
.log-card--b { --c: var(--blue); }
.log-card::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .5s; background: radial-gradient(500px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--c) 18%, transparent), transparent 45%); }
.log-card:hover { border-color: color-mix(in srgb, var(--c) 50%, transparent); }
.log-card:hover::before { opacity: 1; }
.log-card__icon { width: 60px; height: 60px; color: var(--c); padding: 11px; border-radius: 16px; border: 1px solid color-mix(in srgb, var(--c) 40%, transparent); background: color-mix(in srgb, var(--c) 12%, transparent); }
.log-card h3 { font-family: var(--serif); font-weight: 400; font-size: 30px; margin: 30px 0 12px; }
html[lang="zh"] .log-card h3 { font-family: var(--sans); font-weight: 700; }
.log-card p { color: var(--muted); margin: 0 0 24px; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; font-size: 15px; }
.checks li { padding-left: 28px; position: relative; }
.checks li::before { content: ""; position: absolute; left: 0; top: .25em; width: 18px; height: 18px; border-radius: 50%; background: color-mix(in srgb, var(--c) 18%, transparent); }
.checks li::after { content: ""; position: absolute; left: 5.5px; top: calc(.25em + 5px); width: 7px; height: 4px; border-left: 2px solid var(--c); border-bottom: 2px solid var(--c); transform: rotate(-45deg); }
.log__cta { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-top: 20px; padding: 28px 36px; border-radius: var(--radius); border: 1px solid transparent; background: linear-gradient(90deg, #13102a, #1a0e1c) padding-box, var(--grad) border-box; }
.log__cta p { margin: 0; font-family: var(--serif); font-size: 22px; font-weight: 400; }
html[lang="zh"] .log__cta p { font-family: var(--sans); font-size: 18px; font-weight: 500; }

/* carrier network (logistics) */
.carriers { margin-top: 20px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 900px) { .carriers { grid-template-columns: 1fr; } }
.carriers__group { padding: 24px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); }
.carriers__label { margin: 0 0 16px; font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
html[lang="zh"] .carriers__label { letter-spacing: .1em; }
.carriers__row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.carrier { height: 80px; border-radius: 16px; background: #fff; display: grid; place-items: center; padding: 0 20px; transition: transform .5s var(--ease), box-shadow .5s var(--ease); }
.carrier:hover { transform: translateY(-4px); box-shadow: 0 0 0 2px rgba(46,230,214,.8), 0 16px 34px -14px rgba(79,139,255,.8); }
.carrier svg { width: 100%; height: auto; }
.carrier--dhl { background: #ffcc00; }
.carrier--dhl svg { max-width: 120px; }
.carrier--fedex svg { max-width: 104px; }
.carrier--ups svg, .carrier--usps svg { width: auto; height: 48px; }
.carrier--chip { display: flex; align-items: center; justify-content: center; gap: 10px; }
.carrier--chip img { width: 40px; height: 40px; }
.carrier--chip b { font-family: "Inter", sans-serif; font-weight: 800; font-size: 22px; letter-spacing: -.02em; }
.carrier--epost b { font-style: italic; }
@media (max-width: 420px) { .carrier { padding: 0 12px; } .carrier--chip b { font-size: 18px; } .carrier--chip img { width: 32px; height: 32px; } }

/* ---------- why (bento) ---------- */
.why { background: var(--bg-2); border-top: 1px solid var(--line); }
.bento { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 1000px) { .bento { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .bento { grid-template-columns: 1fr; } }
.bento__card {
  --c: var(--violet);
  position: relative; display: block; padding: 28px; border-radius: var(--radius); border: 1px solid var(--line); overflow: hidden;
  background: radial-gradient(110% 80% at 100% 0%, color-mix(in srgb, var(--c) 20%, transparent), transparent 60%), rgba(255,255,255,.03);
  transition: transform .5s var(--ease), border-color .4s;
}
.bento__card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--c) 50%, transparent); }
.bento__card--xl { grid-column: span 2; grid-row: span 2; padding: clamp(28px, 3.6vw, 44px); --c: var(--pink);
  background: radial-gradient(90% 60% at 100% 0%, rgba(255,61,139,.28), transparent 60%), radial-gradient(80% 60% at 0% 100%, rgba(139,108,255,.25), transparent 60%), rgba(255,255,255,.03); }
.bento__card--c1 { --c: var(--violet); grid-column: span 2; }
.bento__card--c2 { --c: var(--teal); }
.bento__card--c3 { --c: var(--blue); }
.bento__card--c4 { --c: var(--pink); }
.bento__card--c5 { --c: var(--amber); }
.bento__card--c6 { --c: var(--yellow); grid-column: span 2; }
@media (max-width: 1000px) { .bento__card--xl, .bento__card--c1, .bento__card--c6 { grid-column: 1 / -1; } .bento__card--xl { grid-row: auto; } }
.bento__k { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; padding: 5px 10px; border-radius: 999px; color: var(--c); background: color-mix(in srgb, var(--c) 14%, transparent); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); }
.bento__card h3 { font-size: 19px; font-weight: 600; margin: 18px 0 8px; line-height: 1.3; }
.bento__card--xl h3 { font-family: var(--serif); font-weight: 400; font-size: clamp(26px, 2.8vw, 36px); line-height: 1.15; letter-spacing: -.01em; margin-top: 22px; }
html[lang="zh"] .bento__card--xl h3 { font-family: var(--sans); font-weight: 700; }
.bento__card p { color: var(--muted); margin: 0; font-size: 15px; }
.pitfalls__label { margin: 28px 0 12px !important; font-size: 12px !important; letter-spacing: .16em; text-transform: uppercase; color: var(--text) !important; font-weight: 600; }
.pitfalls { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 520px) { .pitfalls { grid-template-columns: 1fr; } }
.pitfalls li { position: relative; display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-radius: 12px; background: rgba(0,0,0,.28); border: 1px solid var(--line); font-size: 14px; }
.pitfalls li::before { content: ""; flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--grad) ; -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2l8 3v6c0 5-3.5 9.5-8 11c-4.5-1.5-8-6-8-11V5l8-3z'/%3E%3C/svg%3E") center / contain no-repeat; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2l8 3v6c0 5-3.5 9.5-8 11c-4.5-1.5-8-6-8-11V5l8-3z'/%3E%3C/svg%3E") center / contain no-repeat; }

/* ---------- faq ---------- */
.faq__inner { display: grid; grid-template-columns: 1fr 1.6fr; gap: clamp(40px, 8vw, 120px); }
@media (max-width: 900px) { .faq__inner { grid-template-columns: 1fr; } }
.qa { border-top: 1px solid var(--line); }
.qa:last-child { border-bottom: 1px solid var(--line); }
.qa summary { list-style: none; cursor: pointer; padding: 24px 52px 24px 0; position: relative; font-size: 18px; font-weight: 500; transition: color .3s; }
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after, .qa summary::before { content: ""; position: absolute; right: 10px; top: 50%; width: 14px; height: 2px; border-radius: 2px; background: var(--accent); transition: transform .4s var(--ease); }
.qa summary::before { transform: rotate(90deg); }
.qa[open] summary::before { transform: rotate(0); }
.qa summary:hover { color: var(--accent); }
.qa p { margin: 0; padding: 0 48px 24px 0; color: var(--muted); animation: fadeDown .5s var(--ease); }
@keyframes fadeDown { from { opacity: 0; transform: translateY(-6px); } }

/* ---------- contact ---------- */
.contact { background: radial-gradient(70% 50% at 50% 0%, rgba(139,108,255,.14), transparent 70%), radial-gradient(50% 40% at 80% 30%, rgba(255,61,139,.08), transparent 70%), var(--bg); }
.tabs { position: relative; display: flex; width: fit-content; max-width: 100%; margin: 0 auto 28px; padding: 5px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); }
.tab { position: relative; z-index: 1; padding: 12px 26px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--muted); transition: color .35s; }
.tab.is-active { color: #fff; font-weight: 600; }
.tabs__ink { position: absolute; top: 5px; bottom: 5px; left: 5px; border-radius: 999px; background: var(--grad); box-shadow: 0 8px 24px -8px rgba(255,61,139,.7); transition: transform .5s var(--ease), width .5s var(--ease); }


.panel-wrap { position: relative; max-width: 880px; margin: 0 auto; }
.panel { display: none; padding: clamp(24px, 4vw, 48px); border-radius: 28px; border: 1px solid var(--line); background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015)); box-shadow: 0 40px 100px -40px rgba(0,0,0,.8); }
.panel.is-active { display: block; animation: panelIn .6s var(--ease); }
@keyframes panelIn { from { opacity: 0; transform: translateY(12px); } }

.survey__progress { height: 4px; background: var(--line); border-radius: 4px; overflow: hidden; }
.survey__progress span { display: block; height: 100%; width: 25%; background: var(--grad); transition: width .6s var(--ease); }
.survey__meta { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--dim); margin: 14px 0 22px; font-weight: 600; }
.q { border: 0; padding: 0; margin: 0; min-width: 0; display: none; }
.q.is-active { display: block; animation: qIn .55s var(--ease); }
.q.is-back { animation-name: qInBack; }
@keyframes qIn { from { opacity: 0; transform: translateX(24px); } }
@keyframes qInBack { from { opacity: 0; transform: translateX(-24px); } }
.q__title { font-family: var(--serif); font-weight: 300; font-size: clamp(26px, 3.4vw, 38px); line-height: 1.2; margin: 0 0 28px; padding: 0; }
html[lang="zh"] .q__title { font-family: var(--sans); font-weight: 700; font-size: clamp(22px, 3vw, 30px); }

.options { display: grid; gap: 14px; }
.options--2 { grid-template-columns: 1fr 1fr; }
.options--3 { grid-template-columns: repeat(3, 1fr); }
.options--vol { grid-template-columns: repeat(5, 1fr); margin-top: 18px; }
@media (max-width: 700px) { .options--2, .options--3 { grid-template-columns: 1fr; } .options--vol { grid-template-columns: 1fr 1fr; } }
.opt { position: relative; cursor: pointer; display: block; }
.opt input { position: absolute; opacity: 0; pointer-events: none; }
.opt__body {
  display: flex; flex-direction: column; gap: 6px; height: 100%; padding: 24px; border-radius: 18px; border: 1px solid var(--line); background: rgba(0,0,0,.25);
  transition: border-color .3s, background .3s, transform .4s var(--ease), box-shadow .4s;
}
.opt:hover .opt__body { border-color: var(--line-2); transform: translateY(-2px); }
.opt input:checked + .opt__body { border-color: transparent; background: linear-gradient(160deg, rgba(139,108,255,.2), rgba(255,61,139,.14)) padding-box, var(--grad) border-box; border: 1px solid transparent; box-shadow: 0 20px 40px -20px rgba(255,61,139,.6); }
.opt input:focus-visible + .opt__body { outline: 2px solid var(--pink); outline-offset: 3px; }
.opt strong { font-weight: 600; font-size: 17px; }
.opt small { color: var(--muted); font-size: 13px; line-height: 1.5; }
.opt__icon { width: 46px; height: 46px; color: var(--accent); margin-bottom: 12px; }
.options--vol .opt__body { padding: 20px 14px; text-align: center; align-items: center; justify-content: center; }
.options--vol strong { font-family: var(--serif); font-size: 20px; font-weight: 400; font-variant-numeric: tabular-nums; }

.size-box { display: block; border: 2px solid var(--accent); border-radius: 5px; margin-bottom: 18px; position: relative; background: linear-gradient(135deg, rgba(255,61,139,.25), rgba(139,108,255,.1)); }
.size-box::after { content: ""; position: absolute; left: 50%; top: 0; bottom: 60%; width: 2px; margin-left: -1px; background: var(--accent); opacity: .7; }
.size-box--s { width: 26px; height: 20px; margin-top: 24px; }
.size-box--m { width: 38px; height: 30px; margin-top: 14px; }
.size-box--l { width: 52px; height: 44px; }

.seg { display: inline-flex; padding: 4px; border-radius: 999px; border: 1px solid var(--line); background: rgba(0,0,0,.25); }
.seg label { cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; padding: 9px 20px; border-radius: 999px; font-size: 14px; color: var(--muted); transition: background .3s, color .3s; }
.seg input:checked + span { background: var(--grad); color: #fff; font-weight: 600; }
.seg input:focus-visible + span { outline: 2px solid var(--pink); outline-offset: 2px; }

.summary { display: flex; flex-wrap: wrap; gap: 8px; margin: -10px 0 26px; }
.summary button { font-size: 13px; padding: 7px 14px; border-radius: 999px; background: var(--accent-soft); border: 1px solid rgba(255,61,139,.35); color: #ffd0e3; transition: background .3s; }
.summary button:hover { background: rgba(255,61,139,.22); }
.summary button::after { content: " ✎"; opacity: .6; }

.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .fields { grid-template-columns: 1fr; } }
.field { position: relative; }
.field--full { grid-column: 1 / -1; }
.field input, .field textarea {
  width: 100%; padding: 26px 18px 10px; border-radius: 14px; border: 1px solid var(--line); background: rgba(0,0,0,.3);
  color: var(--text); font: inherit; font-weight: 400; font-size: 16px; resize: vertical; transition: border-color .3s, background .3s, box-shadow .3s;
}
.field textarea { min-height: 130px; }
.field input:hover, .field textarea:hover { border-color: var(--line-2); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--pink); box-shadow: 0 0 0 4px rgba(255,61,139,.14); background: rgba(0,0,0,.4); }
.field label { position: absolute; left: 19px; top: 18px; font-size: 15px; color: var(--dim); pointer-events: none; transition: all .25s var(--ease); }
.field input:focus + label, .field input:not(:placeholder-shown) + label,
.field textarea:focus + label, .field textarea:not(:placeholder-shown) + label { top: 9px; font-size: 11px; letter-spacing: .06em; color: var(--accent); }
.field.is-invalid input { border-color: var(--danger); }
.field.is-invalid label { color: var(--danger); }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; opacity: 0; }

.group { margin-top: 28px; }
.group__label { margin: 0 0 12px; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
html[lang="zh"] .group__label { letter-spacing: .04em; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips--addon { margin-top: 10px; }
.chips label { cursor: pointer; position: relative; }
.chips input { position: absolute; opacity: 0; pointer-events: none; }
.chips span { display: block; padding: 10px 18px; border-radius: 999px; border: 1px solid var(--line); font-size: 14px; color: var(--muted); transition: all .3s var(--ease); }
.chips label:hover span { border-color: var(--line-2); color: var(--text); }
.chips input:checked + span { border-color: var(--pink); color: #fff; background: linear-gradient(100deg, rgba(139,108,255,.3), rgba(255,61,139,.3)); }
.chips--addon span { border-style: dashed; }
.chips input:focus-visible + span { outline: 2px solid var(--pink); outline-offset: 2px; }
.ecom-form .fields + .group { margin-top: 32px; }
.group__label--sub { margin: 22px 0 10px; font-size: 12px; }
.fields--4 { grid-template-columns: repeat(4, 1fr); margin-bottom: 16px; }
@media (max-width: 900px) { .fields--4 { grid-template-columns: 1fr 1fr; } }
.accel-fields { padding: 20px; border-radius: 18px; border: 1px solid rgba(46,230,214,.3); background: rgba(46,230,214,.05); }
.accel-fields .group__label:first-child { color: var(--teal); margin-top: 0; }
.ecom-form .group + .fields { margin-top: 28px; }

.survey__nav { display: flex; justify-content: space-between; align-items: center; margin-top: 36px; gap: 16px; }
.survey__nav--end { justify-content: flex-end; }
.survey__nav .btn--grad { min-width: 160px; }
.btn.is-loading span { opacity: 0; }
.btn.is-loading::after { content: ""; position: absolute; width: 18px; height: 18px; border-radius: 50%; border: 2px solid rgba(255,255,255,.35); border-top-color: #fff; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.form-error { margin: 18px 0 0; padding: 14px 18px; border-radius: 12px; border: 1px solid rgba(255,122,107,.4); background: rgba(255,122,107,.1); color: #ffc9c1; font-size: 14px; }
.form-error a { color: #fff; text-decoration: underline; }

.success { text-align: center; padding: clamp(48px, 7vw, 80px) 24px; scroll-margin-top: 90px; }
.success__check { width: 88px; height: 88px; margin: 0 auto 28px; }
.success__check circle { stroke: url(#sg); stroke-width: 2; stroke-dasharray: 151; stroke-dashoffset: 151; }
.success__check path { stroke: url(#sg); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 36; stroke-dashoffset: 36; }
.success.is-active .success__check circle { animation: draw .8s var(--ease) forwards; }
.success.is-active .success__check path { animation: draw .5s .6s var(--ease) forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.success h3 { font-family: var(--serif); font-weight: 300; font-size: clamp(28px, 3.4vw, 40px); margin: 0 0 10px; }
html[lang="zh"] .success h3 { font-family: var(--sans); font-weight: 700; }
.success p { color: var(--muted); margin: 0 0 32px; }


/* offices (contact) */
.offices { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; max-width: 880px; margin: 0 auto 30px; }
.office { display: flex; align-items: center; gap: 14px; padding: 16px 18px; border-radius: 18px; border: 1px solid var(--line); background: var(--surface); }
.office__pin { width: 42px; height: 42px; flex: none; border-radius: 12px; display: grid; place-items: center; color: var(--c); background: color-mix(in srgb, var(--c) 14%, transparent); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); }
.office__pin svg { width: 20px; height: 20px; }
.office strong { display: block; font-weight: 600; font-size: 15.5px; }
.office small { color: var(--muted); font-size: 13px; }
.office__time { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; margin-left: 4px; }
.offices__note { grid-column: 1 / -1; margin: 0; text-align: center; font-size: 13.5px; color: var(--dim); }
@media (max-width: 560px) { .offices { grid-template-columns: 1fr; } }
.footer__office { display: block; color: var(--muted); font-size: 14px; padding: 5px 0; }

/* ---------- footer ---------- */
.footer { position: relative; z-index: 1; border-top: 1px solid var(--line); padding: 72px 0 28px; background: var(--bg); }
.footer::before { content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 1px; background: var(--grad); opacity: .6; }
.footer__inner { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.footer__brand p { max-width: 320px; margin: 16px 0 0; font-size: 14px; }
.footer__cols { display: flex; gap: clamp(40px, 8vw, 110px); flex-wrap: wrap; }
.footer__cols h5 { margin: 0 0 16px; font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
.footer__cols a { display: block; color: var(--muted); font-size: 14px; padding: 5px 0; transition: color .3s; }
.footer__cols a:hover { color: var(--text); }
.footer__bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 13px; color: var(--dim); }
.footer__legal { margin: 16px auto 0; font-size: 12px; color: var(--dim); line-height: 1.6; }
.to-top:hover { color: var(--accent); }

/* ---------- section rail (desktop) ---------- */
.rail {
  position: fixed; right: 22px; top: 50%; z-index: 40; transform: translate(12px, -50%);
  opacity: 0; pointer-events: none; transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.rail.is-on { opacity: 1; pointer-events: auto; transform: translate(0, -50%); }
.rail ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; position: relative; }
.rail a { display: flex; align-items: center; justify-content: flex-end; gap: 12px; padding: 7px 0; }
.rail__dot { position: relative; z-index: 1; width: 9px; height: 9px; border-radius: 50%; background: var(--bg); border: 1.5px solid rgba(255,255,255,.35); transition: transform .35s var(--ease), background .35s, border-color .35s, box-shadow .35s; margin-right: 1px; }
.rail__label {
  font-size: 12px; font-weight: 600; letter-spacing: .04em; white-space: nowrap; color: var(--text);
  padding: 5px 11px; border-radius: 999px; background: rgba(10,10,20,.85); border: 1px solid var(--line); backdrop-filter: blur(10px);
  opacity: 0; transform: translateX(8px); transition: opacity .3s var(--ease), transform .3s var(--ease); pointer-events: none;
}
.rail a:hover .rail__label, .rail a:focus-visible .rail__label { opacity: 1; transform: none; }
.rail a:hover .rail__dot { border-color: #fff; transform: scale(1.25); }
.rail a.is-current .rail__dot { background: var(--pink); border-color: var(--pink); transform: scale(1.35); box-shadow: 0 0 0 4px rgba(255,61,139,.2), 0 0 14px var(--pink); }
.rail a.is-current .rail__label { opacity: 1; transform: none; background: var(--grad); border-color: transparent; color: #fff; }
.rail a:focus-visible { outline: none; }
.rail a:focus-visible .rail__dot { outline: 2px solid var(--pink); outline-offset: 3px; }
.rail__track { position: absolute; right: 5px; top: 14px; bottom: 14px; width: 1px; background: var(--line); }
.rail__progress { position: absolute; left: 0; top: 0; width: 100%; height: calc(var(--scroll, 0) * 100%); background: var(--grad); }
@media (max-width: 1100px) { .rail { display: none; } }
@media (min-width: 1101px) and (max-width: 1380px) {
  /* keep the rail clear of content: labels only show on hover/current */
  .rail a:not(:hover):not(:focus-visible) .rail__label { opacity: 0; transform: translateX(8px); }
}

/* ---------- quick menu (mobile / tablet) ---------- */
.quick { position: fixed; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom)); z-index: 45; display: none; flex-direction: column; align-items: flex-end; gap: 12px;
  opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .4s var(--ease), transform .4s var(--ease); }
/* the container never takes clicks itself — only the button, and the panel while open */
.quick.is-on { opacity: 1; transform: none; }
.quick.is-on .quick__btn, .quick.is-on.is-open .quick__panel { pointer-events: auto; }
.quick__panel { pointer-events: none; }
@media (max-width: 1100px) { .footer { padding-bottom: 96px; } }
@media (max-width: 1100px) { .quick { display: flex; } }
.quick__btn { position: relative; width: 54px; height: 54px; border-radius: 50%; background: rgba(12,12,24,.88); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border: 1px solid var(--line-2); box-shadow: 0 14px 34px -10px rgba(0,0,0,.8), 0 0 24px -6px rgba(255,61,139,.5); display: grid; place-items: center; }
.quick__ring { position: absolute; inset: 1px; width: calc(100% - 2px); height: calc(100% - 2px); transform: rotate(-90deg); }
.quick__ring circle { fill: none; stroke-width: 2; stroke: transparent; }
.quick__ring-fill { stroke: url(#lg) !important; stroke-linecap: round; stroke-dasharray: 100; stroke-dashoffset: calc(100 - var(--scroll, 0) * 100); }
.quick__icon { position: relative; width: 18px; height: 14px; }
.quick__icon span { position: absolute; left: 0; right: 0; height: 2px; border-radius: 2px; background: #fff; transition: transform .35s var(--ease), opacity .25s, top .35s var(--ease); }
.quick__icon span:nth-child(1) { top: 0; }
.quick__icon span:nth-child(2) { top: 6px; right: 5px; }
.quick__icon span:nth-child(3) { top: 12px; }
.quick__btn[aria-expanded="true"] .quick__icon span:nth-child(1) { top: 6px; transform: rotate(45deg); }
.quick__btn[aria-expanded="true"] .quick__icon span:nth-child(2) { opacity: 0; }
.quick__btn[aria-expanded="true"] .quick__icon span:nth-child(3) { top: 6px; transform: rotate(-45deg); }
.quick__panel {
  width: min(260px, calc(100vw - 32px)); max-height: min(70vh, 520px); overflow-y: auto; padding: 8px; border-radius: 20px;
  background: rgba(12,12,24,.94); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border: 1px solid var(--line-2);
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.9);
  transform-origin: bottom right; transform: scale(.92) translateY(8px); opacity: 0; visibility: hidden;
  transition: transform .35s var(--ease), opacity .25s, visibility .35s;
}
.quick.is-open .quick__panel { transform: none; opacity: 1; visibility: visible; }
.quick__panel a { display: flex; align-items: center; gap: 12px; padding: 11px 12px; border-radius: 12px; font-size: 15px; color: var(--muted); transition: background .25s, color .25s; }
.quick__panel a:hover { background: var(--surface-2); color: var(--text); }
.quick__panel a.is-current { color: #fff; background: linear-gradient(100deg, rgba(139,108,255,.28), rgba(255,61,139,.22)); }
.quick__n { font-family: var(--serif); font-size: 12px; color: var(--accent); min-width: 18px; }

.form-consent { margin: 16px 0 0; font-size: 12.5px; color: var(--dim); text-align: right; }
.form-consent a { color: var(--muted); text-decoration: underline; text-underline-offset: 2px; }
.form-consent a:hover { color: var(--text); }
@media (max-width: 640px) { .form-consent { text-align: left; } }
.footer__links { display: inline-flex; gap: 20px; }
.footer__links a:hover { color: var(--accent); }

/* ---------- booking (Calendly, shown after form submission) ---------- */
@media (max-width: 480px) { .tab { padding: 11px 16px; font-size: 13px; } }
.i-cal { width: 16px; height: 16px; flex: none; }
.book { margin-top: 44px; padding-top: 36px; border-top: 1px solid var(--line); text-align: left; }
.book__head { display: flex; gap: 18px; align-items: flex-start; margin-bottom: 22px; }
.book__icon { width: 52px; height: 52px; flex: none; border-radius: 16px; display: grid; place-items: center; color: #fff; background: var(--grad); box-shadow: 0 10px 26px -10px rgba(255,61,139,.7); }
.book__icon .i-cal { width: 24px; height: 24px; }
.book__title { font-family: var(--serif); font-weight: 400; font-size: clamp(24px, 3vw, 32px); margin: 0 0 6px; line-height: 1.2; }
html[lang="zh"] .book__title { font-family: var(--sans); font-weight: 700; }
.book__lead { color: var(--muted); margin: 0; }
.book__embed { position: relative; min-height: 700px; border-radius: 18px; overflow: hidden; background: #fff; }
.book__embed .calendly-inline-widget, .book__embed iframe { width: 100%; min-width: 280px; height: 700px; border: 0; }
.book__loading { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; color: #555; font-size: 14px; }
.book__spinner { width: 28px; height: 28px; border-radius: 50%; border: 3px solid #eee; border-top-color: var(--pink); animation: spin .8s linear infinite; }
.book.is-failed .book__embed { min-height: 0; background: none; }
.book.is-failed .book__loading { display: none; }
.book__fallback { margin: 14px 0 0; text-align: center; font-size: 13.5px; color: var(--dim); }
.book__fallback a { color: var(--text); text-decoration: underline; text-decoration-color: var(--pink); text-underline-offset: 3px; }
.book.is-failed .book__fallback { font-size: 16px; padding: 30px 0 10px; }
@media (max-width: 640px) { .book__embed { min-height: 760px; } .book__embed .calendly-inline-widget, .book__embed iframe { height: 760px; } .book__head { gap: 14px; } .book__icon { width: 44px; height: 44px; } }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 1s var(--ease), transform 1s var(--ease); transition-delay: var(--d, 0s); }
.reveal.is-in { opacity: 1; transform: none; }

.bento__modes { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.bento__modes span { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; font-size: 13px; font-weight: 500; background: rgba(0,0,0,.28); border: 1px solid var(--line); }
.bento__modes span::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c); box-shadow: 0 0 10px var(--c); }

/* ---------- standalone pages (privacy, 404) ---------- */
.page-nav { position: sticky; top: 0; z-index: 50; background: rgba(6, 6, 12, .8); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid var(--line); }
.page-nav .nav__inner { height: 68px; }
.page-back { font-size: 14px; color: var(--muted); transition: color .3s; }
.page-back:hover { color: var(--text); }
.legal { position: relative; z-index: 1; max-width: 820px; margin: 0 auto; padding: clamp(56px, 8vw, 96px) var(--gutter) 100px; }
.legal h1 { font-family: var(--serif); font-weight: 300; font-size: clamp(38px, 5vw, 58px); line-height: 1.08; letter-spacing: -.02em; margin: 0 0 10px; }
html[lang="zh"] .legal h1 { font-family: var(--sans); font-weight: 700; }
.legal__date { color: var(--dim); font-size: 14px; margin: 0 0 40px; }
.legal h2 { font-size: 20px; font-weight: 600; margin: 44px 0 12px; padding-top: 24px; border-top: 1px solid var(--line); }
.legal p, .legal li { color: var(--muted); }
.legal ul { padding-left: 20px; margin: 0 0 12px; }
.legal li { margin: 6px 0; }
.legal li::marker { color: var(--pink); }
.legal strong { color: var(--text); font-weight: 600; }
.legal a { color: var(--text); text-decoration: underline; text-decoration-color: var(--pink); text-underline-offset: 3px; }
.legal__intro { font-size: 17px; color: var(--text) !important; }

.nf { position: relative; min-height: 100vh; min-height: 100svh; display: grid; place-items: center; text-align: center; padding: 100px var(--gutter); overflow: hidden; }
.nf .nf__code { font-family: var(--serif); font-size: clamp(120px, 26vw, 260px); line-height: .9; font-weight: 300; letter-spacing: -.05em; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin: 0; }
.nf h1 { font-family: var(--serif); font-weight: 300; font-size: clamp(28px, 4vw, 42px); margin: 18px 0 12px; }
html[lang="zh"] .nf h1 { font-family: var(--sans); font-weight: 700; }
.nf p { color: var(--muted); margin: 0 auto 32px; max-width: 460px; }
.nf__ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.nf .lang-toggle { position: absolute; top: 20px; right: 20px; }
.nf .logo { position: absolute; top: 18px; left: 20px; }