/* =========================================================
   CHRONOVALE — watch valuation landing page
   Black & gold editorial. No frameworks.
   ========================================================= */

@font-face {
  font-family: 'Zodiak';
  src: url('../fonts/zodiak-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Zodiak';
  src: url('../fonts/zodiak-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'General Sans';
  src: url('../fonts/general-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'General Sans';
  src: url('../fonts/general-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #0d0c0a;
  --ink-2: #141210;
  --ink-3: #1b1814;
  --paper: #f4f0e6;
  --paper-2: #ece5d6;
  --white: #fdfaf3;
  --gold: #c0a062;
  --gold-2: #dcc08a;
  --gold-deep: #8f7239;

  --txt: #14120e;
  --txt-inv: #f2ede2;
  --muted: rgba(20, 18, 14, .58);
  --muted-inv: rgba(242, 237, 226, .58);

  --line-d: rgba(192, 160, 98, .22);
  --line-l: rgba(20, 18, 14, .14);

  --font-d: 'Zodiak', 'Songti SC', 'STSong', 'SimSun', Georgia, serif;
  --font-s: 'General Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;

  --shell: 1240px;
  --pad: clamp(20px, 5vw, 56px);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --head-h: 78px;
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--txt-inv);
  font-family: var(--font-s);
  font-size: 16px;
  line-height: 1.72;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 400; }
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }

::selection { background: var(--gold); color: #12100c; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.skip:focus {
  position: fixed;
  top: 10px; left: 10px;
  width: auto; height: auto;
  margin: 0; padding: 10px 16px;
  clip: auto;
  background: var(--gold);
  color: #12100c;
  z-index: 200;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--pad);
}

section[id] { scroll-margin-top: calc(var(--head-h) + 12px); }

/* film grain */
.grain {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: .05;
  mix-blend-mode: overlay;
  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='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- typography ---------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted-inv);
}
.eyebrow--gold { color: var(--gold); }
.eyebrow__dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--gold);
  flex: none;
  animation: pulse 3.2s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .35; transform: scale(.7); }
}

.h2 {
  font-family: var(--font-d);
  font-weight: 400;
  font-size: clamp(30px, 3.6vw, 50px);
  line-height: 1.16;
  letter-spacing: -.015em;
  margin-top: 18px;
}

.lead {
  margin-top: 22px;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted-inv);
}

/* ---------- buttons ---------- */
.btn {
  --btn-bg: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 56px;
  padding: 0 30px;
  border: 1px solid transparent;
  border-radius: 2px;
  background: var(--btn-bg);
  font-family: var(--font-s);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease), transform .35s var(--ease);
  white-space: nowrap;
}
.btn--gold {
  background: var(--gold);
  color: #12100c;
  border-color: var(--gold);
}
.btn--gold:hover { background: var(--gold-2); border-color: var(--gold-2); transform: translateY(-1px); }
.btn--gold:active { transform: translateY(0); }
.btn--ghost {
  border-color: rgba(242, 237, 226, .26);
  color: var(--txt-inv);
}
.btn--ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn--sm { height: 42px; padding: 0 20px; font-size: 11px; letter-spacing: .14em; }
.btn--wide { width: 100%; }
.btn__arrow {
  width: 22px; height: 1px;
  background: currentColor;
  position: relative;
  transition: width .35s var(--ease);
}
.btn__arrow::after {
  content: "";
  position: absolute;
  right: 0; top: -3px;
  width: 7px; height: 7px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: rotate(45deg);
}
.btn--wide:hover .btn__arrow { width: 30px; }

/* ---------- header ---------- */
.site-head {
  position: fixed;
  inset: 0 0 auto;
  z-index: 60;
  padding-block: 16px;
  transition: background .45s var(--ease), padding .45s var(--ease), border-color .45s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-head.is-solid {
  background: rgba(13, 12, 10, .88);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  backdrop-filter: blur(16px) saturate(120%);
  border-bottom-color: var(--line-d);
  padding-block: 10px;
}
.site-head__inner {
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand { display: flex; flex-direction: column; line-height: 1; }
.brand__mark {
  font-family: var(--font-d);
  font-size: 19px;
  letter-spacing: .24em;
  color: var(--txt-inv);
}
.brand__sub {
  margin-top: 7px;
  font-size: 9px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
}

.nav {
  display: flex;
  gap: 30px;
  margin-left: auto;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted-inv);
}
.nav a { position: relative; padding-block: 4px; transition: color .3s var(--ease); }
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.nav a:hover { color: var(--txt-inv); }
.nav a:hover::after { transform: scaleX(1); }

.site-head__actions { display: flex; align-items: center; gap: 14px; }

.lang { position: relative; display: flex; align-items: center; }
.lang__select {
  appearance: none;
  -webkit-appearance: none;
  height: 42px;
  padding: 0 34px 0 14px;
  background: transparent;
  border: 1px solid rgba(242, 237, 226, .2);
  border-radius: 2px;
  color: var(--txt-inv);
  font-family: var(--font-s);
  font-size: 12px;
  letter-spacing: .06em;
  cursor: pointer;
}
.lang__select:hover { border-color: var(--gold); }
.lang__select option { background: #141210; color: #f2ede2; }
.lang__caret {
  position: absolute;
  right: 14px;
  width: 7px; height: 7px;
  border-right: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
  transform: rotate(45deg) translateY(-2px);
  pointer-events: none;
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding-top: calc(var(--head-h) + 54px);
  padding-bottom: 40px;
  background:
    radial-gradient(120% 90% at 78% 34%, rgba(192, 160, 98, .1), transparent 62%),
    var(--ink);
  overflow: hidden;
}
.hero__rule {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(192, 160, 98, .14) 1px, transparent 1px);
  background-size: 25% 100%;
  opacity: .5;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  gap: clamp(24px, 4vw, 60px);
  align-items: center;
  min-height: min(70vh, 660px);
}

.hero__copy { max-width: 620px; }

.hero__title {
  margin-top: 26px;
  font-family: var(--font-d);
  font-weight: 400;
  font-size: clamp(46px, 6.6vw, 92px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--white);
}
html[data-lang="zh"] .hero__title { letter-spacing: .005em; line-height: 1.1; }
html:not([data-lang="zh"]) .hero__title { font-size: clamp(36px, 4.6vw, 66px); line-height: 1.06; }

.hero__lead {
  margin-top: 26px;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted-inv);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 34px;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(242, 237, 226, .44);
}
.hero__meta li { display: flex; align-items: center; }
.hero__meta li + li::before {
  content: "";
  width: 1px; height: 10px;
  margin: 0 16px;
  background: rgba(192, 160, 98, .4);
}

.hero__media {
  position: relative;
  height: min(74vh, 620px);
  margin: 0;
  overflow: hidden;
}
.hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13, 12, 10, .42) 0%, transparent 34%, rgba(13, 12, 10, .72) 100%);
  pointer-events: none;
}
.hero__img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 50% 42%;
  filter: contrast(1.06) saturate(.94) brightness(.94);
  transform: scale(1.02);
  animation: kenburns 26s ease-in-out infinite alternate;
}
@keyframes kenburns {
  from { transform: scale(1.02) translate3d(0, 0, 0); }
  to { transform: scale(1.1) translate3d(0, -1.6%, 0); }
}
.hero__ring {
  position: absolute;
  z-index: 1;
  right: -14%;
  top: 44%;
  width: min(58vw, 520px);
  aspect-ratio: 1;
  border: 1px solid rgba(192, 160, 98, .26);
  border-radius: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}
.hero__caption {
  position: absolute;
  z-index: 2;
  left: 18px; bottom: 16px;
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(242, 237, 226, .62);
}

.hero__foot {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line-d);
  font-size: 11px;
  letter-spacing: .02em;
  color: rgba(242, 237, 226, .4);
}
.hero__foot p { max-width: 62ch; }
.hero__scroll {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(242, 237, 226, .45);
}
.hero__scroll i {
  width: 1px; height: 24px;
  background: linear-gradient(180deg, var(--gold), transparent);
  animation: drop 2.6s var(--ease) infinite;
}
@keyframes drop {
  0% { transform: scaleY(.2); transform-origin: top; opacity: 0; }
  40% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(1); transform-origin: bottom; opacity: 0; }
}

/* ---------- factors ---------- */
.factors {
  position: relative;
  background: var(--ink-2);
  padding-block: clamp(64px, 9vw, 132px);
  border-top: 1px solid var(--line-d);
}
.factors__grid {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  gap: clamp(30px, 6vw, 90px);
}
.factors__intro { position: sticky; top: calc(var(--head-h) + 40px); align-self: start; }

.factors__list { border-top: 1px solid var(--line-d); }
.factor {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  padding: 26px 6px 26px 0;
  border-bottom: 1px solid var(--line-d);
  transition: background .4s var(--ease), padding-left .4s var(--ease);
}
.factor:hover { background: linear-gradient(90deg, rgba(192, 160, 98, .07), transparent); padding-left: 8px; }
.factor__idx {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gold);
  padding-top: 5px;
}
.factor__body h3 {
  font-family: var(--font-d);
  font-size: 22px;
  letter-spacing: -.01em;
  color: var(--white);
}
.factor__body p {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted-inv);
  max-width: 38ch;
}
.factor__val {
  font-family: var(--font-d);
  font-size: 20px;
  color: var(--gold-2);
  letter-spacing: .01em;
  white-space: nowrap;
  padding-top: 2px;
}
.factors__note {
  margin-top: 34px;
  font-size: 11px;
  letter-spacing: .02em;
  color: rgba(242, 237, 226, .34);
}

/* ---------- flow ---------- */
.flow {
  background: var(--paper);
  color: var(--txt);
  padding-block: clamp(64px, 9vw, 128px);
}
.flow .eyebrow { color: var(--gold-deep); }
.flow__head { max-width: 700px; }
.flow__head .h2 { color: var(--txt); }
.flow .lead { color: var(--muted); }

.flow__steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: clamp(40px, 6vw, 76px);
  border-top: 1px solid var(--line-l);
}
.step {
  position: relative;
  padding: 30px 30px 0 0;
  border-right: 1px solid var(--line-l);
}
.step + .step { padding-left: 30px; }
.step:last-child { border-right: 0; padding-right: 0; }
.step__num {
  font-family: var(--font-d);
  font-size: 42px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(143, 114, 57, .55);
}
.step h3 {
  margin-top: 22px;
  font-family: var(--font-d);
  font-size: 24px;
  color: var(--txt);
}
.step p {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 32ch;
}
.step__time {
  display: inline-block;
  margin-top: 26px;
  margin-bottom: 6px;
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold-deep);
}

/* ---------- estimate ---------- */
.estimate {
  background: var(--paper);
  color: var(--txt);
  border-top: 1px solid var(--line-l);
  padding-block: clamp(56px, 7vw, 96px) clamp(64px, 9vw, 128px);
}
.estimate__grid {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  gap: clamp(30px, 6vw, 80px);
  align-items: start;
}
.estimate__aside { position: sticky; top: calc(var(--head-h) + 36px); }
.estimate__aside .eyebrow { color: var(--gold-deep); }
.estimate__aside .h2 { color: var(--txt); }
.estimate__aside .lead { color: var(--muted); max-width: 36ch; }

.estimate__points {
  margin-top: 40px;
  border-top: 1px solid var(--line-l);
}
.estimate__points li {
  display: flex;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-l);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--txt);
}
.estimate__points li span:first-child {
  color: var(--gold-deep);
  font-size: 10px;
  letter-spacing: .14em;
  padding-top: 3px;
}
.estimate__legal {
  margin-top: 26px;
  font-size: 11px;
  line-height: 1.8;
  color: rgba(20, 18, 14, .45);
  max-width: 34ch;
}

.card {
  background: var(--white);
  border: 1px solid rgba(20, 18, 14, .08);
  box-shadow: 0 40px 80px -60px rgba(20, 18, 14, .55);
}
.form-card { padding: clamp(22px, 3.4vw, 44px); }

.field { margin-bottom: 24px; }
.field--half { max-width: 100%; }
fieldset.field { border: 0; padding: 0; margin-inline: 0; }
.field__label {
  display: block;
  margin-bottom: 10px;
  padding: 0;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(20, 18, 14, .52);
}
.field__hint {
  margin-top: 8px;
  font-size: 11.5px;
  color: rgba(20, 18, 14, .42);
}
.field__err {
  margin-top: 8px;
  font-size: 11.5px;
  color: #9a3b2b;
  min-height: 0;
}
.field__err:empty { display: none; }

input[type="text"],
input[type="email"],
input[type="number"],
select {
  width: 100%;
  height: 56px;
  padding: 0 16px;
  background: #fff;
  border: 1px solid var(--line-l);
  border-radius: 2px;
  font-family: var(--font-s);
  font-size: 15px;
  color: var(--txt);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
input::placeholder { color: rgba(20, 18, 14, .3); }
input:focus, select:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(192, 160, 98, .18);
}
input[aria-invalid="true"], select[aria-invalid="true"] {
  border-color: #b04a35;
  box-shadow: 0 0 0 3px rgba(176, 74, 53, .1);
}
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.select-wrap { position: relative; }
.select-wrap select { appearance: none; -webkit-appearance: none; padding-right: 40px; cursor: pointer; }
.select-wrap__caret {
  position: absolute;
  right: 16px; top: 50%;
  width: 7px; height: 7px;
  border-right: 1px solid var(--gold-deep);
  border-bottom: 1px solid var(--gold-deep);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}

.conds {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.cond { cursor: pointer; }
.cond input { position: absolute; opacity: 0; width: 0; height: 0; }
.cond__box {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--line-l);
  border-radius: 2px;
  background: #fff;
  transition: border-color .3s var(--ease), background .3s var(--ease), color .3s var(--ease);
}
.cond__t { font-size: 14px; letter-spacing: .04em; }
.cond__h { font-size: 11px; color: rgba(20, 18, 14, .45); transition: color .3s var(--ease); }
.cond:hover .cond__box { border-color: rgba(192, 160, 98, .7); }
.cond input:checked + .cond__box {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}
.cond input:checked + .cond__box .cond__h { color: rgba(242, 237, 226, .55); }
.cond input:focus-visible + .cond__box { box-shadow: 0 0 0 3px rgba(192, 160, 98, .3); }

.checks { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.check {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: rgba(20, 18, 14, .74);
  cursor: pointer;
}
.check input { position: absolute; opacity: 0; width: 0; height: 0; }
.check span::before {
  content: "";
  display: inline-block;
  width: 14px; height: 14px;
  margin-right: 0;
  border: 1px solid rgba(20, 18, 14, .28);
  border-radius: 1px;
  vertical-align: -2px;
  margin-right: 9px;
  transition: background .25s var(--ease), border-color .25s var(--ease);
}
.check input:checked + span::before {
  background: var(--gold);
  border-color: var(--gold);
  box-shadow: inset 0 0 0 3px #fff;
}
.check input:focus-visible + span::before { box-shadow: 0 0 0 3px rgba(192, 160, 98, .3); }

.consent {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(20, 18, 14, .66);
  cursor: pointer;
}
.consent input { position: absolute; opacity: 0; width: 0; height: 0; }
.consent__box {
  flex: none;
  width: 16px; height: 16px;
  margin-top: 3px;
  border: 1px solid rgba(20, 18, 14, .28);
  border-radius: 1px;
  transition: background .25s var(--ease), border-color .25s var(--ease);
}
.consent input:checked + .consent__box {
  background: var(--gold);
  border-color: var(--gold);
  box-shadow: inset 0 0 0 4px #fff;
}
.consent input:focus-visible + .consent__box { box-shadow: 0 0 0 3px rgba(192, 160, 98, .3); }

.form-action { margin-top: 30px; }
.form-action__note {
  margin-top: 14px;
  text-align: center;
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(20, 18, 14, .4);
}

/* ---------- sample ---------- */
.sample {
  background: var(--ink);
  padding-block: clamp(64px, 9vw, 132px);
  border-top: 1px solid var(--line-d);
}
.sample__grid {
  display: grid;
  grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr);
  gap: clamp(30px, 6vw, 80px);
  align-items: center;
}
.sample__intro .h2 { color: var(--white); }

.board {
  background: linear-gradient(180deg, #16130f, #0f0e0c);
  border: 1px solid var(--line-d);
  padding: clamp(20px, 2.6vw, 32px);
}
.board__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line-d);
}
.board__kicker {
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}
.board__ref {
  margin-top: 8px;
  font-family: var(--font-d);
  font-size: 19px;
  color: var(--white);
}
.board__badge {
  flex: none;
  padding: 6px 12px;
  border: 1px solid var(--line-d);
  font-size: 9.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted-inv);
}
.board__chart { position: relative; margin-top: 24px; padding-left: 34px; }
.board__chart svg { width: 100%; height: 200px; display: block; overflow: visible; }
.board__axis {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-block: 26px 6px;
  font-size: 9px;
  letter-spacing: .12em;
  color: rgba(242, 237, 226, .34);
}
.board__foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  font-size: 9.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(242, 237, 226, .38);
}
.board__note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line-d);
  font-size: 11px;
  line-height: 1.7;
  color: rgba(242, 237, 226, .34);
}

/* ---------- faq ---------- */
.faq {
  background: var(--paper);
  color: var(--txt);
  padding-block: clamp(64px, 9vw, 128px);
}
.faq__grid {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  gap: clamp(30px, 6vw, 80px);
  align-items: start;
}
.faq__intro { position: sticky; top: calc(var(--head-h) + 40px); }
.faq__intro .eyebrow { color: var(--gold-deep); }
.faq__intro .h2 { color: var(--txt); }
.faq__intro .lead { color: var(--muted); }

.faq__list { border-top: 1px solid var(--line-l); }
.qa { border-bottom: 1px solid var(--line-l); }
.qa summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  font-family: var(--font-d);
  font-size: 19px;
  color: var(--txt);
  cursor: pointer;
  list-style: none;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary i {
  position: relative;
  flex: none;
  width: 12px; height: 12px;
}
.qa summary i::before,
.qa summary i::after {
  content: "";
  position: absolute;
  background: var(--gold-deep);
  transition: transform .35s var(--ease), opacity .35s var(--ease);
}
.qa summary i::before { left: 0; top: 5.5px; width: 12px; height: 1px; }
.qa summary i::after { left: 5.5px; top: 0; width: 1px; height: 12px; }
.qa[open] summary i::after { transform: scaleY(0); opacity: 0; }
.qa__body { padding: 0 40px 24px 0; }
.qa__body p {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 52ch;
}

/* ---------- closing ---------- */
.closing {
  position: relative;
  background: var(--ink-2);
  padding-block: clamp(72px, 11vw, 150px);
  border-top: 1px solid var(--line-d);
  overflow: hidden;
}
.closing__inner { position: relative; z-index: 1; max-width: 900px; }
.closing__title {
  margin-top: 22px;
  font-family: var(--font-d);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 68px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--white);
}
html[data-lang="zh"] .closing__title { letter-spacing: 0; line-height: 1.16; }
.closing .lead { color: var(--muted-inv); }
.closing .btn { margin-top: 36px; }
.closing__mark {
  position: absolute;
  right: -8%;
  bottom: -20%;
  font-family: var(--font-d);
  font-size: clamp(56px, 11vw, 160px);
  letter-spacing: .04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(192, 160, 98, .12);
  pointer-events: none;
  white-space: nowrap;
}

/* ---------- footer ---------- */
.site-foot {
  background: var(--ink);
  padding-block: 56px 32px;
  border-top: 1px solid var(--line-d);
}
.site-foot__top {
  display: grid;
  grid-template-columns: 1.4fr .8fr .8fr;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line-d);
}
.site-foot__brand p {
  margin-top: 14px;
  max-width: 38ch;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted-inv);
}
.site-foot__links,
.site-foot__legal-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 12.5px;
  color: var(--muted-inv);
}
.site-foot__links a:hover,
.site-foot__legal-links a:hover { color: var(--gold); }

.site-foot__legal {
  padding-block: 28px;
  border-bottom: 1px solid var(--line-d);
  display: grid;
  gap: 12px;
  max-width: 96ch;
}
.site-foot__legal p {
  font-size: 11.5px;
  line-height: 1.9;
  color: rgba(242, 237, 226, .42);
}
.site-foot__bottom {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 24px;
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(242, 237, 226, .34);
}
.site-foot__ad {
  padding: 3px 8px;
  border: 1px solid var(--line-d);
  color: rgba(242, 237, 226, .54);
  font-size: 9px;
}
.site-foot__bottom span:last-child { margin-left: auto; }

/* ---------- modals ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(12px, 3vw, 32px);
}
.modal[hidden] { display: none; }
.modal__scrim {
  position: absolute;
  inset: 0;
  background: rgba(6, 5, 4, .82);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  animation: fadeIn .4s var(--ease);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal__panel {
  position: relative;
  z-index: 1;
  width: 100%;
  background: var(--ink);
  border: 1px solid rgba(192, 160, 98, .3);
  animation: panelIn .55s var(--ease);
  max-height: calc(100svh - 24px);
  overflow: auto;
}
@keyframes panelIn {
  from { opacity: 0; transform: translateY(18px) scale(.99); }
  to { opacity: 1; transform: none; }
}

.modal__close {
  position: absolute;
  z-index: 3;
  top: 12px; right: 14px;
  width: 38px; height: 38px;
  display: grid;
  place-items: center;
  background: rgba(13, 12, 10, .55);
  border: 1px solid rgba(242, 237, 226, .22);
  border-radius: 50%;
  color: var(--txt-inv);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  transition: border-color .3s var(--ease), color .3s var(--ease), background .3s var(--ease);
}
.modal__close:hover { border-color: var(--gold); color: var(--gold); background: rgba(13, 12, 10, .8); }

/* video */
.modal__panel--video { max-width: 1040px; padding: 0; overflow: hidden; }
.vplayer { position: relative; aspect-ratio: 16 / 9; background: #000; }
.vplayer.is-fallback {
  background-image: url('../img/video-poster.jpg');
  background-size: cover;
  background-position: center;
}
.vplayer.is-fallback .vplayer__video { opacity: 0; }
.vplayer__video {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(.66) contrast(1.06) saturate(.86);
}
.vplayer__grade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 9, 8, .82) 0%, rgba(10, 9, 8, .1) 34%, rgba(10, 9, 8, .9) 100%),
    radial-gradient(80% 60% at 50% 40%, rgba(192, 160, 98, .12), transparent 70%);
  pointer-events: none;
}
.vplayer__top {
  position: absolute;
  top: 22px; left: 26px; right: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.vplayer__kicker {
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--gold);
}
.vplayer__brand {
  font-family: var(--font-d);
  font-size: 13px;
  letter-spacing: .28em;
  color: rgba(242, 237, 226, .7);
}
.vplayer__bottom {
  position: absolute;
  left: clamp(20px, 4vw, 44px);
  right: clamp(20px, 4vw, 44px);
  bottom: clamp(22px, 4vw, 40px);
}
.vplayer__title {
  font-family: var(--font-d);
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--white);
  max-width: 18ch;
}
html[data-lang="zh"] .vplayer__title { letter-spacing: .01em; }
.vplayer__steps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 22px;
}
.vplayer__steps li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: rgba(242, 237, 226, .4);
  transition: color .5s var(--ease);
}
.vplayer__steps li span {
  font-size: 9px;
  letter-spacing: .14em;
  color: var(--gold);
}
.vplayer__steps li b { font-weight: 400; }
.vplayer__steps li.is-on { color: var(--white); }
.vplayer__steps li.is-on span { color: var(--gold-2); }
.vplayer__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.vplayer__bar {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: rgba(242, 237, 226, .12);
}
.vplayer__bar i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--gold);
}

/* loading */
.modal__panel--loading {
  max-width: 440px;
  padding: clamp(34px, 5vw, 48px) clamp(26px, 4vw, 40px);
  text-align: center;
}
.ring {
  position: relative;
  width: 128px;
  height: 128px;
  margin: 6px auto 26px;
}
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 1.4; }
.ring__bg { stroke: rgba(192, 160, 98, .18); }
.ring__fg {
  stroke: var(--gold);
  stroke-linecap: round;
  stroke-dasharray: 339.3;
  stroke-dashoffset: 339.3;
}
.ring__pct {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-d);
  font-size: 24px;
  color: var(--gold-2);
}
.loading__title {
  font-family: var(--font-d);
  font-size: 26px;
  color: var(--white);
}
.loading__status {
  margin-top: 10px;
  min-height: 24px;
  font-size: 12.5px;
  color: var(--muted-inv);
  transition: opacity .3s var(--ease);
}
.loading__bar {
  height: 1px;
  margin-top: 24px;
  background: rgba(192, 160, 98, .2);
  overflow: hidden;
}
.loading__bar i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--gold);
  transition: width .3s linear;
}
.loading__hint {
  margin-top: 16px;
  font-size: 10.5px;
  letter-spacing: .1em;
  color: rgba(242, 237, 226, .34);
}

/* result */
.modal__panel--result {
  max-width: 560px;
  padding: clamp(34px, 4.6vw, 50px) clamp(24px, 4vw, 44px) clamp(30px, 4vw, 40px);
}
.seal { width: 56px; height: 56px; margin-bottom: 22px; }
.seal svg { width: 100%; height: 100%; }
.seal path { stroke-dasharray: 40; stroke-dashoffset: 40; animation: draw .9s .35s var(--ease) forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.result__title {
  margin-top: 14px;
  font-family: var(--font-d);
  font-size: clamp(24px, 3vw, 31px);
  line-height: 1.24;
  color: var(--white);
}
.result__body {
  margin-top: 16px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted-inv);
}
.result__summary {
  margin-top: 26px;
  border-top: 1px solid var(--line-d);
}
.result__summary div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-d);
  font-size: 12.5px;
}
.result__summary dt { color: rgba(242, 237, 226, .42); letter-spacing: .06em; }
.result__summary dd { color: var(--txt-inv); text-align: right; }
.result__note {
  margin-top: 18px;
  font-size: 11px;
  line-height: 1.7;
  color: rgba(242, 237, 226, .36);
}
.modal__panel--result .btn { margin-top: 26px; }

/* ---------- reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .nav { gap: 22px; }
  .hero__inner { grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); }
  .factors__grid, .estimate__grid, .sample__grid, .faq__grid, .flow__steps { gap: 40px; }
}

@media (max-width: 900px) {
  :root { --head-h: 68px; }
  .nav { display: none; }
  .site-head__actions { margin-left: auto; }

  .hero { padding-top: calc(var(--head-h) + 90px); }
  .hero__inner {
    grid-template-columns: 1fr;
    min-height: 0;
    gap: 0;
  }
  .hero__media {
    position: absolute;
    inset: 0;
    height: 100%;
    z-index: 0;
    opacity: .32;
  }
  .hero__media::after {
    background: linear-gradient(180deg, rgba(13, 12, 10, .96) 0%, rgba(13, 12, 10, .86) 45%, rgba(13, 12, 10, .98) 100%);
  }
  .hero__copy { position: relative; z-index: 2; }
  .hero__caption { display: none; }
  .hero__foot { flex-direction: column; align-items: flex-start; gap: 14px; }
  .hero__scroll { display: none; }

  .factors__grid, .estimate__grid, .sample__grid, .faq__grid {
    grid-template-columns: 1fr;
  }
  .factors__intro, .estimate__aside, .faq__intro { position: static; }

  .flow__steps { grid-template-columns: 1fr; }
  .step { padding: 26px 0; border-right: 0; border-bottom: 1px solid var(--line-l); }
  .step + .step { padding-left: 0; }
  .step:last-child { border-bottom: 0; }
  .step__num { font-size: 32px; }

  .site-foot__top { grid-template-columns: 1fr 1fr; }
  .site-foot__brand { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  body { font-size: 15px; }
  .brand__mark { font-size: 16px; letter-spacing: .2em; }
  .brand__sub { font-size: 8px; }
  .lang__select { height: 38px; padding: 0 28px 0 10px; font-size: 11px; }
  .lang__caret { right: 11px; }
  .site-head__actions .btn { display: none; }

  .hero__title { font-size: clamp(38px, 11vw, 56px); }
  .hero__lead { font-size: 14px; }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { width: 100%; }
  .hero__meta { gap: 8px 0; font-size: 10px; }
  .hero__meta li + li::before { margin: 0 10px; }

  .h2 { font-size: clamp(27px, 7.4vw, 36px); }
  .factor { grid-template-columns: 32px 1fr; gap: 12px; }
  .factor__val { grid-column: 2; padding-top: 8px; font-size: 17px; }
  .factor__body h3 { font-size: 19px; }

  .form-card { padding: 20px 16px 24px; }
  .conds { grid-template-columns: 1fr 1fr; }
  .cond__box { padding: 12px 12px; }
  .cond__t { font-size: 13px; }
  .cond__h { font-size: 10px; }

  .board__chart { padding-left: 26px; }
  .board__chart svg { height: 160px; }
  .board__ref { font-size: 16px; }

  .vplayer { aspect-ratio: 4 / 5; }
  .vplayer__steps { flex-direction: column; align-items: flex-start; gap: 7px; }
  .vplayer__steps li { font-size: 11px; }
  .vplayer__title { font-size: 22px; }

  .modal__close { top: 8px; right: 8px; width: 34px; height: 34px; }
  .closing__mark { display: none; }
  .site-foot__top { grid-template-columns: 1fr; gap: 26px; }
  .site-foot__bottom { flex-wrap: wrap; }
  .site-foot__bottom span:last-child { margin-left: 0; width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero__img { animation: none; transform: none; }
}