/* 言见 Yansight 官网 · 剪纸绘本风（与产品「声音游乐场」同一视觉语言） */

:root {
  --cream: #f4eddf;
  --cream-soft: #fbf7ee;
  --paper: #fffaf0;
  --navy: #24344d;
  --navy-deep: #17253a;
  --ink: #202a38;
  --muted: #756f65;
  --line: rgba(36, 52, 77, .16);
  --orange: #ef6b3e;
  --orange-dark: #d9522d;
  --blue: #70b8d4;
  --blue-dark: #397e9b;
  --green: #6ea66d;
  --yellow: #e1b84d;
  --red: #ca5f4d;
  --shadow: 0 18px 50px rgba(45, 39, 29, .12);
  --soft-shadow: 0 8px 24px rgba(45, 39, 29, .1);
  --radius: 22px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--cream);
  color: var(--ink);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(239, 107, 62, .25); }

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.hero > *, .section > *, .start-card > *, .mock-body > *, .coach-bubble > *, .report-grid > * { min-width: 0; }

.paper-grain {
  position: fixed; inset: 0; z-index: 60; pointer-events: none;
  background: url("./assets/textures/print-grain-overlay-v1.png") repeat;
  background-size: 480px;
  opacity: .5; mix-blend-mode: multiply;
}

/* ---------- 顶栏 ---------- */

.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 16px clamp(20px, 4vw, 56px);
  background: rgba(244, 237, 223, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(45, 39, 29, .06); }

.brand-lockup { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { position: relative; width: 30px; height: 30px; flex: none; }
.brand-mark i { position: absolute; bottom: 3px; width: 7px; border-radius: 8px; background: var(--navy); transform-origin: bottom; }
.brand-mark i:nth-child(1) { left: 1px; height: 14px; }
.brand-mark i:nth-child(2) { left: 12px; height: 25px; background: var(--blue); }
.brand-mark i:nth-child(3) { left: 22px; height: 19px; background: var(--orange); transform: rotate(8deg); }
.brand-name { display: flex; flex-direction: column; line-height: 1.25; }
.brand-name strong { font-size: 17px; letter-spacing: .12em; color: var(--navy); }
.brand-name small { font-size: 9px; letter-spacing: .3em; color: var(--muted); }

.site-nav { display: flex; gap: clamp(14px, 2.4vw, 32px); }
.site-nav a {
  position: relative; font-size: 14px; font-weight: 600; color: var(--navy);
  padding: 4px 2px; transition: color .2s ease;
}
.site-nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 2px; border-radius: 2px; background: var(--orange);
  transition: right .25s ease;
}
.site-nav a:hover { color: var(--orange-dark); }
.site-nav a:hover::after { right: 0; }

.header-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--navy); color: var(--cream-soft);
  font-size: 13px; font-weight: 700; letter-spacing: .06em;
  padding: 10px 18px; border-radius: 999px;
  box-shadow: var(--soft-shadow);
  transition: transform .2s ease, background .2s ease;
}
.header-cta svg { width: 16px; height: 16px; fill: currentColor; }
.header-cta:hover { background: var(--navy-deep); transform: translateY(-2px); }

/* ---------- 通用排版 ---------- */

main { display: block; }

.section { padding: clamp(60px, 8vw, 104px) clamp(20px, 5vw, 72px); max-width: 1240px; margin: 0 auto; scroll-margin-top: 72px; }

.kicker {
  font-size: 12px; font-weight: 800; letter-spacing: .32em;
  color: var(--orange-dark); margin-bottom: 18px;
}
.kicker.light { color: var(--yellow); }

.section-heading { margin-bottom: clamp(36px, 5vw, 64px); max-width: 640px; }

h1, h2, h3 { color: var(--navy); line-height: 1.25; letter-spacing: .02em; }

h1 { font-size: clamp(44px, 6.4vw, 84px); font-weight: 900; letter-spacing: .04em; }
h2 { font-size: clamp(30px, 4vw, 48px); font-weight: 900; }
h3 { font-size: 19px; font-weight: 800; }

h1 em { font-style: normal; color: var(--orange); position: relative; }
h2 em { font-style: normal; color: inherit; background: linear-gradient(transparent 62%, rgba(225, 184, 77, .55) 62%, rgba(225, 184, 77, .55) 92%, transparent 92%); }

.section-note { margin-top: 18px; color: var(--muted); font-size: 15.5px; }
.section-note.light { color: rgba(251, 247, 238, .72); }

/* 出场动画 · 像纸片飘落就位 */
.reveal {
  opacity: 0; --drop: 30px; --tilt-in: 1.4deg;
  transition: opacity .7s ease, transform .8s cubic-bezier(.16, .84, .3, 1);
}
.reveal:not([data-tilt]) { transform: translateY(var(--drop)) rotate(var(--tilt-in)); }
.reveal.is-visible { opacity: 1; --drop: 0px; --tilt-in: 0deg; }

/* 纸张交互：随鼠标立体倾斜 + 浮起（阴影随手势移动） */
[data-tilt] {
  --rx: 0deg; --ry: 0deg; --rot: 0deg; --lift: 0px; --drop: 0px; --tilt-in: 0deg; --sx: 0px;
  transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry))
             translateY(calc(var(--lift) + var(--drop)))
             rotate(calc(var(--rot) + var(--tilt-in)));
  transition: transform .45s cubic-bezier(.22, .8, .3, 1), box-shadow .35s ease, background .3s ease, border-color .25s ease;
}
[data-tilt].is-tilting { transition: transform .12s ease-out, box-shadow .35s ease, background .3s ease; }
[data-tilt]:hover {
  --lift: -7px; --rot: 0deg;
  box-shadow: calc(12px + var(--sx)) 30px 60px rgba(45, 39, 29, .17);
}

/* ---------- 首屏 ---------- */

.hero {
  position: relative;
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  align-items: center; gap: clamp(32px, 5vw, 72px);
  max-width: 1240px; margin: 0 auto;
  padding: clamp(48px, 7vw, 96px) clamp(20px, 5vw, 72px) clamp(64px, 8vw, 110px);
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 700; letter-spacing: .18em; color: var(--navy);
  background: var(--paper); border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 18px 8px 14px; margin-bottom: 26px; box-shadow: var(--soft-shadow);
}
.courage-dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--orange); box-shadow: 0 0 0 5px rgba(239, 107, 62, .15);
  flex: none;
}

.hero-sub { margin: 24px 0 32px; max-width: 460px; font-size: 16.5px; color: var(--muted); }

.hero-actions { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--navy); color: var(--cream-soft);
  font-size: 15px; font-weight: 800; letter-spacing: .08em;
  padding: 15px 26px; border-radius: 999px; border: none; cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform .2s ease, background .2s ease;
}
.btn-primary b { font-weight: 400; transition: transform .2s ease; }
.btn-primary:hover { background: var(--navy-deep); transform: translateY(-2px); }
.btn-primary:hover b { transform: translateX(4px); }
.btn-primary.light { background: var(--orange); }
.btn-primary.light:hover { background: var(--orange-dark); }

/* 按压手感 */
.btn-primary:active { transform: translateY(1px) scale(.97); box-shadow: var(--soft-shadow); }
.header-cta:active, .rail-btn:active { transform: scale(.92); }

.btn-text {
  font-size: 15px; font-weight: 700; color: var(--navy);
  border-bottom: 2px solid var(--navy); padding-bottom: 3px;
  transition: color .2s ease, border-color .2s ease;
}
.btn-text:hover { color: var(--orange-dark); border-color: var(--orange-dark); }

.hero-facts { display: flex; gap: clamp(24px, 3vw, 44px); list-style: none; margin-top: 44px; }
.hero-facts li { display: flex; flex-direction: column; }
.hero-facts strong { font-size: 26px; font-weight: 900; color: var(--navy); line-height: 1.2; }
.hero-facts span { font-size: 12.5px; color: var(--muted); letter-spacing: .06em; }

/* 首屏插画 */
.hero-art { position: relative; }

.art-card {
  position: relative; background: var(--paper);
  padding: 14px 14px 0; border-radius: 8px;
  box-shadow: var(--shadow);
  transform: rotate(1.6deg);
  transition: transform .5s cubic-bezier(.22, .8, .3, 1);
  will-change: transform;
}
.art-card img { border-radius: 6px; width: 100%; height: auto; }
.art-card::after { content: ""; display: block; height: 14px; }

.tape {
  position: absolute; top: -14px; width: 96px; height: 30px;
  background: rgba(225, 184, 77, .85);
  opacity: .9; z-index: 2;
  clip-path: polygon(3% 8%, 97% 0, 100% 88%, 95% 100%, 4% 96%, 0 90%);
}
.tape-left { left: 34px; transform: rotate(-5deg); }
.tape-right { right: 34px; transform: rotate(4deg); background: rgba(110, 166, 109, .8); }

.floating-word {
  position: absolute; z-index: 3;
  background: var(--navy); color: var(--cream-soft);
  font-size: 13px; font-weight: 700; letter-spacing: .2em;
  padding: 10px 18px; border-radius: 999px;
  box-shadow: var(--soft-shadow);
  animation: floaty 5s ease-in-out infinite;
}
.word-one { top: 8%; left: -18px; }
.word-two { bottom: 12%; right: -10px; background: var(--orange); animation-delay: -2.5s; }

@keyframes floaty {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-10px) rotate(2deg); }
}

.hero-companion {
  position: absolute; left: -34px; bottom: -30px; width: 84px; z-index: 4;
  filter: drop-shadow(0 10px 18px rgba(45, 39, 29, .18));
  animation: companion-bob 4s ease-in-out infinite;
}
@keyframes companion-bob {
  0%, 100% { transform: translateY(0) rotate(-3deg); }
  50% { transform: translateY(-9px) rotate(3deg); }
}

/* ---------- 飘带 ---------- */

.ribbon-clip { overflow: hidden; padding: 14px 0; }
.ribbon-marquee {
  background: var(--navy);
  transform: rotate(-1.2deg) scale(1.02);
  overflow: hidden; padding: 18px 0;
  box-shadow: var(--shadow);
}
.ribbon-track {
  display: flex; align-items: center; gap: 40px; width: max-content;
  animation: marquee 26s linear infinite;
}
.ribbon-track span {
  color: var(--cream-soft); font-size: 15px; font-weight: 800; letter-spacing: .34em;
  white-space: nowrap;
}
.ribbon-track i {
  width: 10px; height: 10px; border-radius: 50%; background: var(--orange); flex: none;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 怎么练 ---------- */

.step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(18px, 2.4vw, 30px); }

.step-card {
  position: relative; background: var(--paper);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 28px 30px; box-shadow: var(--soft-shadow);
}
.step-card:nth-child(1) { --rot: -.8deg; }
.step-card:nth-child(3) { --rot: .8deg; }

.step-index {
  position: absolute; top: 20px; right: 24px;
  font-size: 13px; font-weight: 900; letter-spacing: .14em; color: var(--orange);
}
.step-card h3 { margin: 20px 0 10px; }
.step-card p { font-size: 14.5px; color: var(--muted); }

.step-symbol { position: relative; height: 44px; display: flex; align-items: flex-end; gap: 6px; }
.symbol-cards i { width: 22px; height: 30px; border-radius: 4px; background: var(--blue); box-shadow: inset 0 0 0 2px var(--paper); }
.symbol-cards i:nth-child(2) { height: 38px; background: var(--navy); transform: rotate(-4deg); }
.symbol-cards i:nth-child(3) { background: var(--yellow); transform: rotate(5deg); }
.symbol-mic i { width: 6px; border-radius: 6px; background: var(--orange); }
.symbol-mic i:nth-child(1) { height: 14px; } .symbol-mic i:nth-child(2) { height: 26px; }
.symbol-mic i:nth-child(3) { height: 38px; } .symbol-mic i:nth-child(4) { height: 22px; }
.symbol-mic i:nth-child(5) { height: 30px; }
.symbol-sprout { gap: 0; }
.symbol-sprout i:first-child { width: 4px; height: 34px; background: var(--green); border-radius: 4px; }
.symbol-sprout i:last-child {
  width: 22px; height: 14px; background: var(--green);
  border-radius: 100% 4px 100% 4px; margin-left: -2px; margin-bottom: 20px; transform: rotate(-8deg);
}

/* ---------- 话题 ---------- */

.topic-rail-wrap { position: relative; }

.topic-rail {
  display: flex; gap: 22px; overflow-x: auto;
  padding: 20px 6px 30px;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}
.topic-rail::-webkit-scrollbar { display: none; }

.topic-card {
  position: relative; flex: 0 0 240px;
  background: var(--paper); border: 1px solid var(--line); border-radius: 18px;
  overflow: hidden; scroll-snap-align: start;
  box-shadow: var(--soft-shadow);
}
.topic-card:nth-child(odd) { --rot: -1deg; }
.topic-card:nth-child(even) { --rot: 1deg; }

/* 悬停时右上角纸角卷起 */
.topic-card::after {
  content: ""; position: absolute; top: 0; right: 0; z-index: 5;
  width: 0; height: 0; border-bottom-left-radius: 12px;
  background: linear-gradient(225deg, var(--cream) 0 49%, #efe3cb 52%, #fdf6e7 78%, #e5d8bd 100%);
  box-shadow: -4px 4px 10px rgba(45, 39, 29, .16);
  transition: width .32s cubic-bezier(.22, .8, .3, 1), height .32s cubic-bezier(.22, .8, .3, 1);
}
.topic-card:hover::after { width: 48px; height: 48px; }
.topic-card img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.topic-card span { display: flex; flex-direction: column; gap: 2px; padding: 14px 16px 16px; text-align: left; }
.topic-card small { font-size: 11px; letter-spacing: .14em; color: var(--orange-dark); font-weight: 700; }
.topic-card strong { font-size: 16.5px; color: var(--navy); }

.rail-controls { position: absolute; right: 6px; top: -72px; display: flex; gap: 10px; }
.rail-btn {
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid var(--line); background: var(--paper); color: var(--navy);
  font-size: 16px; cursor: pointer; box-shadow: var(--soft-shadow);
  transition: transform .2s ease, background .2s ease, color .2s ease;
}
.rail-btn:hover { background: var(--navy); color: var(--cream-soft); transform: translateY(-2px); }

/* ---------- 分龄 ---------- */

.ages-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px, 3vw, 36px); }

.age-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--soft-shadow);
}
.age-card:first-child { --rot: -.6deg; }
.age-card:last-child { --rot: .6deg; }
.age-card figure { overflow: hidden; }
.age-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; object-position: bottom; transition: transform .6s ease; }
.age-card:hover img { transform: scale(1.03); }
.age-card div { padding: 24px 26px 28px; }
.age-card span {
  display: inline-block; font-size: 12px; font-weight: 800; letter-spacing: .12em;
  color: var(--cream-soft); background: var(--blue-dark);
  padding: 4px 12px; border-radius: 999px; margin-bottom: 12px;
}
.age-card:last-child span { background: var(--green); color: var(--paper); }
.age-card p { margin-top: 8px; font-size: 14.5px; color: var(--muted); }

/* ---------- 陪练 ---------- */

.coach-section {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(32px, 5vw, 72px); align-items: center;
}

.coach-copy p { margin-top: 20px; color: var(--muted); font-size: 15.5px; }

.coach-list { list-style: none; margin-top: 26px; display: flex; flex-direction: column; gap: 14px; }
.coach-list li { display: flex; align-items: center; gap: 14px; font-size: 14.5px; color: var(--navy); font-weight: 600; }

.chip {
  flex: none; font-size: 12px; font-weight: 800; letter-spacing: .1em;
  padding: 5px 12px; border-radius: 999px;
}
.chip-filler { background: rgba(202, 95, 77, .14); color: var(--red); }
.chip-hedge { background: rgba(239, 107, 62, .14); color: var(--orange-dark); }
.chip-vague { background: rgba(225, 184, 77, .2); color: #9a7b1e; }

/* 界面 mock */
.mock-window {
  background: var(--paper); border-radius: 20px; overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  transform: rotate(.8deg);
}

.mock-titlebar {
  display: flex; align-items: center; gap: 7px;
  background: var(--cream-soft); border-bottom: 1px solid var(--line);
  padding: 12px 16px;
}
.mock-titlebar i { width: 11px; height: 11px; border-radius: 50%; background: var(--line); }
.mock-titlebar i:nth-child(1) { background: var(--red); }
.mock-titlebar i:nth-child(2) { background: var(--yellow); }
.mock-titlebar i:nth-child(3) { background: var(--green); }
.mock-titlebar span { margin-left: 10px; font-size: 12px; font-weight: 700; letter-spacing: .1em; color: var(--muted); }
.mock-titlebar b {
  margin-left: auto; display: inline-flex; align-items: center; gap: 7px;
  font-size: 11px; font-weight: 700; color: var(--blue-dark); letter-spacing: .08em;
}
.mock-titlebar b em {
  width: 8px; height: 8px; border-radius: 50%; background: var(--orange);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(239, 107, 62, .35); } 50% { box-shadow: 0 0 0 6px rgba(239, 107, 62, 0); } }

.mock-body { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }

.mock-paper { position: relative; padding: 28px 24px 28px 46px; border-right: 1px dashed var(--line); }
.paper-margin { position: absolute; top: 0; bottom: 0; left: 30px; width: 1px; background: rgba(202, 95, 77, .35); }
.mock-paper p { font-size: 14.5px; color: var(--ink); margin-bottom: 14px; line-height: 2; }
.mock-cursor-line { color: var(--muted); }
.cursor {
  display: inline-block; width: 2px; height: 1.1em; background: var(--orange);
  vertical-align: -0.2em; animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hl-filler { text-decoration: underline wavy var(--red) 1.5px; text-underline-offset: 4px; }
.hl-hedge { background: rgba(239, 107, 62, .16); border-radius: 4px; padding: 0 3px; }
.hl-vague { border-bottom: 2px dashed var(--yellow); }

.mock-coach { padding: 22px 18px; display: flex; flex-direction: column; gap: 16px; background: var(--cream-soft); }

.coach-bubble { display: flex; gap: 12px; align-items: flex-start; }
.coach-bubble img { width: 40px; flex: none; margin-top: 2px; animation: companion-bob 4s ease-in-out infinite; }
.coach-bubble div {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: 4px 16px 16px 16px; padding: 12px 14px;
  box-shadow: var(--soft-shadow);
}
.coach-bubble small { display: block; font-size: 10px; letter-spacing: .16em; color: var(--blue-dark); font-weight: 800; margin-bottom: 4px; }
.coach-bubble p { font-size: 13px; color: var(--ink); line-height: 1.6; }

.coach-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.coach-stats div {
  background: var(--paper); border: 1px solid var(--line); border-radius: 12px;
  padding: 10px 8px; text-align: center;
}
.coach-stats small { display: block; font-size: 10px; color: var(--muted); letter-spacing: .06em; }
.coach-stats strong { font-size: 17px; color: var(--navy); font-weight: 900; }

.mock-dock {
  display: flex; align-items: center; justify-content: center; gap: 18px;
  border-top: 1px solid var(--line); padding: 14px; background: var(--paper);
}
.dock-wave { display: flex; align-items: flex-end; gap: 4px; height: 22px; }
.dock-wave i { width: 4px; border-radius: 4px; background: var(--blue); animation: wave 1.2s ease-in-out infinite; }
.dock-wave i:nth-child(1) { height: 8px; } .dock-wave i:nth-child(2) { height: 16px; animation-delay: .1s; }
.dock-wave i:nth-child(3) { height: 22px; animation-delay: .2s; } .dock-wave i:nth-child(4) { height: 12px; animation-delay: .3s; }
.dock-wave i:nth-child(5) { height: 18px; animation-delay: .4s; } .dock-wave i:nth-child(6) { height: 10px; animation-delay: .5s; }
.dock-wave i:nth-child(7) { height: 15px; animation-delay: .6s; }
@keyframes wave { 0%, 100% { transform: scaleY(.5); } 50% { transform: scaleY(1); } }
.dock-record {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12.5px; font-weight: 800; letter-spacing: .1em; color: var(--cream-soft);
  background: var(--orange); border-radius: 999px; padding: 9px 18px;
}
.dock-record i { width: 9px; height: 9px; border-radius: 50%; background: var(--cream-soft); animation: pulse 1.6s ease-in-out infinite; }

/* ---------- 报告 ---------- */

.report-grid {
  display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
  gap: clamp(28px, 4vw, 56px); align-items: center;
  margin-bottom: clamp(36px, 5vw, 60px);
}

.report-cover {
  position: relative; background: var(--paper); padding: 12px 12px 0;
  border-radius: 8px; box-shadow: var(--shadow); --rot: -1.4deg;
}
.report-cover img { border-radius: 6px; width: 100%; }
.report-cover figcaption {
  padding: 12px 4px 14px; font-size: 12px; font-weight: 700;
  letter-spacing: .22em; color: var(--muted); text-align: center;
}

.report-points { display: flex; flex-direction: column; gap: 14px; }
.report-points article {
  display: flex; gap: 18px; align-items: flex-start;
  background: var(--paper); border: 1px solid var(--line); border-radius: 16px;
  padding: 20px 22px; box-shadow: var(--soft-shadow);
  transition: transform .25s ease;
}
.report-points article:hover { transform: translateX(6px); }
.report-points span { font-size: 13px; font-weight: 900; color: var(--orange); letter-spacing: .1em; margin-top: 3px; }
.report-points p { font-size: 14px; color: var(--muted); margin-top: 4px; }

.progress-map { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--line); }
.progress-map img { width: 100%; }

/* ---------- 隐私 ---------- */

.privacy-section {
  max-width: none; background: var(--navy);
  border-radius: clamp(24px, 4vw, 48px);
  margin: 0 clamp(12px, 3vw, 40px);
  padding-left: clamp(20px, 5vw, 72px); padding-right: clamp(20px, 5vw, 72px);
}
.privacy-section h2 { color: var(--cream-soft); }
.privacy-section .section-heading { margin-left: auto; margin-right: auto; }

.privacy-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px; max-width: 1240px; margin: 0 auto;
}

.privacy-grid article {
  background: rgba(251, 247, 238, .06);
  border: 1px solid rgba(251, 247, 238, .14);
  border-radius: 18px; padding: 24px 22px;
}
.privacy-grid article:hover { background: rgba(251, 247, 238, .1); }
.privacy-grid span { font-size: 13px; font-weight: 900; letter-spacing: .12em; color: var(--yellow); }
.privacy-grid h3 { color: var(--cream-soft); font-size: 16.5px; margin: 10px 0 6px; }
.privacy-grid p { font-size: 13.5px; color: rgba(251, 247, 238, .68); line-height: 1.7; }

.privacy-main {
  grid-row: span 2; display: flex; flex-direction: column; justify-content: flex-end;
  min-height: 240px;
  background: rgba(239, 107, 62, .14) !important;
  border-color: rgba(239, 107, 62, .35) !important;
}
.privacy-main span { font-size: 46px; font-weight: 900; color: var(--orange); letter-spacing: 0; }
.privacy-main h3 { font-size: 20px; }

/* ---------- FAQ ---------- */

.faq-section { max-width: 860px; }

.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-list details {
  background: var(--paper); border: 1px solid var(--line); border-radius: 16px;
  padding: 0 24px; box-shadow: var(--soft-shadow);
  transition: border-color .25s ease;
}
.faq-list details[open] { border-color: rgba(239, 107, 62, .45); }
.faq-list summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  cursor: pointer; list-style: none;
  font-size: 15.5px; font-weight: 700; color: var(--navy);
  padding: 20px 0;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span {
  flex: none; width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--cream); color: var(--orange-dark); font-size: 15px;
  transition: transform .3s ease, background .3s ease;
}
.faq-list details[open] summary span { transform: rotate(45deg); background: rgba(239, 107, 62, .15); }
.faq-list details p { padding: 0 40px 20px 0; font-size: 14.5px; color: var(--muted); }

/* 展开时像纸一样翻开 */
.faq-list details[open] p {
  animation: paper-unfold .5s cubic-bezier(.22, .8, .3, 1);
  transform-origin: top center;
}
@keyframes paper-unfold {
  from { opacity: 0; transform: perspective(700px) rotateX(-24deg) translateY(-8px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 开始使用 ---------- */

.start-section { padding-bottom: clamp(80px, 10vw, 140px); }

.start-card {
  position: relative; overflow: hidden;
  background: var(--navy); border-radius: clamp(24px, 4vw, 44px);
  padding: clamp(40px, 6vw, 72px);
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(28px, 4vw, 56px); align-items: center;
  box-shadow: var(--shadow);
}
.start-card h2 { color: var(--cream-soft); }
.start-card h2 em { color: var(--yellow); background: none; }
.start-copy p { margin: 18px 0 28px; color: rgba(251, 247, 238, .72); font-size: 15px; }

.start-steps {
  list-style: none; display: flex; flex-direction: column; gap: 14px;
}
.start-steps li {
  display: flex; gap: 18px; align-items: flex-start;
  background: rgba(251, 247, 238, .07);
  border: 1px solid rgba(251, 247, 238, .14);
  border-radius: 16px; padding: 20px 22px;
  transition: transform .25s ease, background .25s ease;
}
.start-steps li:hover { transform: translateX(6px); background: rgba(251, 247, 238, .11); }
.start-steps span { font-size: 13px; font-weight: 900; color: var(--yellow); letter-spacing: .1em; margin-top: 3px; }
.start-steps h3 { color: var(--cream-soft); font-size: 17px; }
.start-steps p { font-size: 13.5px; color: rgba(251, 247, 238, .68); margin-top: 3px; }

.start-companion {
  position: absolute; right: -18px; bottom: -14px; width: 110px;
  opacity: .9; transform: rotate(-6deg);
  animation: companion-bob 4.6s ease-in-out infinite;
}

/* ---------- Toast ---------- */

.toast {
  position: fixed; left: 50%; bottom: 36px; z-index: 70;
  transform: translate(-50%, 20px);
  background: var(--navy); color: var(--cream-soft);
  font-size: 13.5px; font-weight: 700; letter-spacing: .1em;
  padding: 13px 26px; border-radius: 999px; box-shadow: var(--shadow);
  opacity: 0; pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
}
.toast.is-show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 页脚 ---------- */

.site-footer {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; flex-wrap: wrap;
  max-width: 1240px; margin: 0 auto;
  padding: 48px clamp(20px, 5vw, 72px) 40px;
  border-top: 1px solid var(--line);
}
.footer-brand p { margin-top: 16px; font-size: 13.5px; color: var(--muted); }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { font-size: 13.5px; font-weight: 600; color: var(--navy); }
.footer-links a:hover { color: var(--orange-dark); }
.footer-copy { font-size: 12px; color: var(--muted); letter-spacing: .08em; }

/* ---------- 响应式 ---------- */

@media (max-width: 1024px) {
  .privacy-grid { grid-template-columns: repeat(2, 1fr); }
  .privacy-main { grid-row: auto; min-height: 0; }
}

@media (max-width: 900px) {
  .site-nav { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 40px; }
  .hero-art { margin-top: 12px; }
  .word-one { left: 6px; }
  .word-two { right: 6px; }
  .hero-companion { left: -8px; }
  .step-grid { grid-template-columns: 1fr; }
  .ages-grid { grid-template-columns: 1fr; }
  .coach-section { grid-template-columns: 1fr; }
  .report-grid { grid-template-columns: 1fr; }
  .start-card { grid-template-columns: 1fr; }
  .rail-controls { position: static; margin-top: 4px; justify-content: flex-end; }
}

@media (max-width: 560px) {
  .hero-facts { gap: 20px; }
  .mock-body { grid-template-columns: 1fr; }
  .mock-paper { border-right: none; border-bottom: 1px dashed var(--line); }
  .privacy-grid { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; --drop: 0px; --tilt-in: 0deg; }
}