/* =========================================================
   与 AI 对话 1.0 · 现场回顾
   商业化图文作品 · 移动优先
   ========================================================= */

/* ---------- Reset & tokens ---------- */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --ink-900: #0F1B2D;
    --ink-800: #18243A;
    --ink-700: #2A3650;
    --ink-500: #5A6478;
    --ink-300: #9AA3B5;
    --ink-200: #C8CEDB;
    --ink-100: #E5E8EF;
    --ink-50:  #F2F4F8;
    --paper:   #FAF7F2;
    --paper-2: #F2EDE4;
    --gold:    #C9A24A;
    --gold-2:  #A8832C;
    --crimson: #C24A4A;

    --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
    --font-sans:  "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-en:    "Inter", "Helvetica Neue", Arial, sans-serif;

    --maxw: 1180px;
    --gutter: clamp(20px, 4vw, 56px);
    --radius-s: 6px;
    --radius-m: 14px;
    --radius-l: 22px;

    --ease: cubic-bezier(.2,.7,.2,1);
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-sans);
    color: var(--ink-900);
    background: var(--paper);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }

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

/* ---------- Reading progress ---------- */
.progress {
    position: fixed;
    top: 0; left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, var(--gold), var(--crimson));
    z-index: 200;
    transition: width .15s linear;
    box-shadow: 0 1px 6px rgba(201,162,74,.45);
}

/* ---------- Top nav ---------- */
.nav {
    position: fixed;
    inset: 0 0 auto 0;
    height: 64px;
    z-index: 100;
    transition: background .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
    border-bottom: 1px solid transparent;
    background: rgba(250,247,242,.55);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
}
.nav.is-stuck {
    background: rgba(250,247,242,.92);
    border-bottom-color: var(--ink-100);
    box-shadow: 0 6px 24px rgba(15,27,45,.06);
}
.nav__inner {
    max-width: var(--maxw);
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--gutter);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.nav__brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--ink-900);
    letter-spacing: .02em;
}
.nav__brand-mark {
    background: var(--ink-900);
    color: var(--paper);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 14px;
    letter-spacing: .15em;
}
.nav__brand-divider {
    width: 1px; height: 18px; background: var(--ink-200);
}
.nav__brand-text {
    font-size: 13px;
    color: var(--ink-500);
    letter-spacing: .1em;
    text-transform: uppercase;
}
.nav__primary {
    display: none;
    gap: 6px;
}
.nav__primary a {
    position: relative;
    padding: 8px 12px;
    font-size: 14px;
    color: var(--ink-700);
    border-radius: 6px;
    transition: color .2s, background .2s;
}
.nav__primary a:hover { color: var(--ink-900); background: var(--ink-50); }
.nav__primary a.is-active { color: var(--gold-2); }
.nav__primary a.is-active::after {
    content: "";
    position: absolute;
    left: 12px; right: 12px; bottom: 2px;
    height: 2px;
    background: var(--gold);
    border-radius: 2px;
}
.nav__menu {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px; height: 40px;
    border-radius: 8px;
    background: var(--ink-900);
    color: #fff;
    align-items: center;
}
.nav__menu span {
    width: 18px; height: 2px; background: #fff; border-radius: 2px;
    transition: transform .25s var(--ease), opacity .2s;
}
.nav.is-open .nav__menu span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-open .nav__menu span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__menu span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Drawer (mobile menu) ---------- */
.drawer {
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--ink-100);
    box-shadow: 0 14px 40px rgba(15,27,45,.12);
    z-index: 99;
    padding: 8px var(--gutter) 24px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform .25s var(--ease), opacity .25s var(--ease);
    max-height: calc(100vh - 64px);
    overflow-y: auto;
}
.drawer.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.drawer__list { display: flex; flex-direction: column; }
.drawer__list a {
    display: block;
    padding: 14px 4px;
    font-size: 16px;
    color: var(--ink-800);
    border-bottom: 1px solid var(--ink-100);
    font-family: var(--font-serif);
    letter-spacing: .02em;
}
.drawer__list a:hover { color: var(--gold-2); }
.drawer__foot {
    margin-top: 18px;
    color: var(--ink-300);
    font-size: 12px;
    letter-spacing: .15em;
    text-transform: uppercase;
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    color: #fff;
    overflow: hidden;
    isolation: isolate;
}
.hero__media {
    position: absolute; inset: 0;
    z-index: -2;
}
.hero__media img {
    width: 100%; height: 100%; object-fit: cover;
    transform: scale(1.05);
    animation: heroPan 18s var(--ease) forwards;
}
@keyframes heroPan { to { transform: scale(1.12) translate(-2%, -1%); } }
.hero__veil {
    position: absolute; inset: 0; z-index: -1;
    background:
        linear-gradient(180deg, rgba(15,27,45,.35) 0%, rgba(15,27,45,.55) 50%, rgba(15,27,45,.85) 100%),
        linear-gradient(120deg, rgba(15,27,45,.6) 0%, rgba(15,27,45,.1) 60%);
}
.hero__grid {
    position: absolute; inset: 0; z-index: -1;
    background-image:
        linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
}
.hero__inner {
    max-width: var(--maxw);
    width: 100%;
    margin: 0 auto;
    padding: 120px var(--gutter) 96px;
    position: relative;
}
.hero__eyebrow {
    display: inline-flex; align-items: center; gap: 12px;
    font-size: 12px;
    letter-spacing: .25em;
    text-transform: uppercase;
    color: var(--gold);
    font-weight: 500;
    font-family: var(--font-en);
    margin-bottom: 28px;
}
.hero__eyebrow-line {
    width: 36px; height: 1px; background: var(--gold);
}
.hero__title {
    font-family: var(--font-serif);
    font-weight: 900;
    font-size: clamp(48px, 11vw, 148px);
    line-height: 0.95;
    letter-spacing: -.01em;
    color: #fff;
    margin-bottom: 24px;
}
.hero__title em {
    font-style: normal;
    color: var(--gold);
    font-family: var(--font-en);
    font-weight: 700;
    letter-spacing: -.02em;
}
.hero__title-num {
    display: inline-block;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--gold);
    font-family: var(--font-en);
    font-size: .8em;
    vertical-align: .12em;
    margin-left: .15em;
}
.hero__lede {
    max-width: 520px;
    font-size: clamp(15px, 2vw, 18px);
    color: rgba(255,255,255,.78);
    line-height: 1.7;
    margin-bottom: 36px;
    font-weight: 300;
}
.hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
    margin-bottom: 56px;
}
.hero__meta-item {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,.85);
    letter-spacing: .04em;
    padding: 6px 0;
}
.hero__meta-item i { color: var(--gold); width: 16px; }
.hero__scroll {
    display: inline-flex; align-items: center; gap: 12px;
    font-size: 12px;
    letter-spacing: .3em;
    text-transform: uppercase;
    color: rgba(255,255,255,.7);
    font-family: var(--font-en);
    padding-bottom: 6px;
    border-bottom: 1px solid rgba(255,255,255,.3);
    transition: color .2s, border-color .2s, gap .2s;
}
.hero__scroll:hover { color: var(--gold); border-color: var(--gold); gap: 18px; }
.hero__corner {
    position: absolute;
    width: 28px; height: 28px;
    border: 1px solid rgba(201,162,74,.6);
}
.hero__corner--tl { top: 96px; left: var(--gutter); border-right: 0; border-bottom: 0; }
.hero__corner--tr { top: 96px; right: var(--gutter); border-left: 0; border-bottom: 0; }
.hero__corner--bl { bottom: 28px; left: var(--gutter); border-right: 0; border-top: 0; }
.hero__corner--br { bottom: 28px; right: var(--gutter); border-left: 0; border-top: 0; }

/* ---------- Rail (sticky TOC, desktop) ---------- */
.rail { display: none; }

/* ---------- Chapter frame ---------- */
.chapter {
    position: relative;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: clamp(72px, 10vw, 140px) var(--gutter);
}
.chapter__num {
    font-family: var(--font-en);
    font-weight: 600;
    font-size: 13px;
    letter-spacing: .3em;
    color: var(--gold-2);
    margin-bottom: 18px;
    display: inline-block;
    padding-left: 2px;
}
.chapter__title {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: clamp(32px, 4.5vw, 56px);
    line-height: 1.15;
    color: var(--ink-900);
    margin-bottom: 16px;
    letter-spacing: -.01em;
}
.chapter__deck {
    font-size: clamp(15px, 1.6vw, 18px);
    color: var(--ink-500);
    max-width: 720px;
    line-height: 1.7;
    margin-bottom: 56px;
}
.chapter__head { max-width: 880px; }
.chapter__head--center { text-align: center; margin: 0 auto; }
.chapter__head--center .chapter__deck { margin-left: auto; margin-right: auto; }
.chapter__head--light .chapter__title,
.chapter__head--light .chapter__deck { color: var(--paper); }
.chapter__head--light .chapter__num { color: var(--gold); }

/* ---------- Intro / pullquote ---------- */
.chapter--intro { max-width: 880px; text-align: center; }
.chapter--intro .chapter__num,
.chapter--intro .chapter__title,
.chapter--intro .chapter__deck { text-align: center; }
.pullquote {
    position: relative;
    margin: 56px auto 48px;
    max-width: 760px;
    padding: 36px 28px 28px;
    border-top: 1px solid var(--gold);
    border-bottom: 1px solid var(--gold);
}
.pullquote__mark {
    position: absolute;
    top: -28px; left: 50%;
    transform: translateX(-50%);
    width: 56px; height: 56px;
    background: var(--gold);
    color: var(--paper);
    font-family: var(--font-serif);
    font-size: 56px;
    line-height: 56px;
    text-align: center;
    border-radius: 50%;
    font-weight: 700;
    padding-top: 6px;
}
.pullquote blockquote {
    font-family: var(--font-serif);
    font-weight: 500;
    font-size: clamp(20px, 2.6vw, 28px);
    line-height: 1.5;
    color: var(--ink-900);
    margin-bottom: 18px;
}
.pullquote figcaption {
    font-size: 13px;
    color: var(--ink-500);
    letter-spacing: .08em;
}
.prose { max-width: 640px; margin: 0 auto; }
.prose p {
    font-size: 16px;
    line-height: 1.85;
    color: var(--ink-700);
    margin-bottom: 12px;
}

/* ---------- Share cards (theme) ---------- */
.share {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: clamp(72px, 8vw, 120px);
}
.share__media {
    position: relative;
    border-radius: var(--radius-l);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--ink-100);
    box-shadow: 0 16px 40px rgba(15,27,45,.10);
}
.share__media img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform .8s var(--ease);
}
.share:hover .share__media img { transform: scale(1.04); }
.share__badge {
    position: absolute;
    top: 16px; left: 16px;
    background: var(--ink-900);
    color: var(--gold);
    font-family: var(--font-en);
    font-size: 11px;
    letter-spacing: .25em;
    text-transform: uppercase;
    padding: 6px 12px;
    border-radius: 999px;
    font-weight: 600;
}
.share__body { max-width: 720px; }
.share__tag {
    font-size: 12px;
    color: var(--ink-500);
    letter-spacing: .12em;
    margin-bottom: 14px;
    text-transform: uppercase;
    font-family: var(--font-en);
}
.share__title {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: clamp(24px, 3vw, 34px);
    line-height: 1.3;
    color: var(--ink-900);
    margin-bottom: 22px;
    letter-spacing: -.005em;
}
.share__lede p,
.share__body p {
    font-size: 16px;
    line-height: 1.85;
    color: var(--ink-700);
    margin-bottom: 16px;
}
.share__body p:last-child { margin-bottom: 0; }
.share__body b { color: var(--ink-900); font-weight: 600; }
.h4 {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 20px;
    color: var(--ink-900);
    margin: 32px 0 14px;
    padding-left: 14px;
    border-left: 3px solid var(--gold);
}
.h5 {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 17px;
    color: var(--ink-800);
    margin: 28px 0 12px;
}

.callout {
    background: var(--paper-2);
    border-radius: var(--radius-m);
    padding: 18px 22px;
    margin: 18px 0;
    font-size: 15px;
    color: var(--ink-800);
    line-height: 1.8;
    border-left: 3px solid var(--gold);
    position: relative;
}
.callout::before {
    content: "“";
    position: absolute;
    top: 4px; left: 8px;
    font-family: var(--font-serif);
    font-size: 32px;
    color: var(--gold);
    opacity: .35;
    line-height: 1;
}

.quote {
    background: var(--ink-900);
    color: #fff;
    padding: 22px 26px;
    border-radius: var(--radius-m);
    font-size: 16px;
    line-height: 1.8;
    margin: 22px 0;
    position: relative;
    font-family: var(--font-serif);
    font-weight: 500;
    border-left: 3px solid var(--gold);
}

.bullet, .numlist { padding-left: 22px; margin: 14px 0 18px; }
.bullet li, .numlist li {
    font-size: 15px;
    color: var(--ink-700);
    line-height: 1.85;
    margin-bottom: 8px;
}
.bullet li::marker { color: var(--gold); }
.numlist li::marker { color: var(--gold-2); font-weight: 700; }

/* ---------- Roundtable banner ---------- */
.roundtable__banner {
    position: relative;
    border-radius: var(--radius-l);
    overflow: hidden;
    aspect-ratio: 16/7;
    margin: 0 0 56px;
    box-shadow: 0 18px 48px rgba(15,27,45,.14);
}
.roundtable__banner img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 1.2s var(--ease);
}
.roundtable__banner:hover img { transform: scale(1.04); }
.roundtable__banner-veil {
    position: absolute; inset: 0;
    background: linear-gradient(120deg, rgba(15,27,45,.65) 0%, rgba(15,27,45,.15) 70%);
}
.roundtable__banner-text {
    position: absolute;
    left: 32px; bottom: 28px;
    color: #fff;
}
.roundtable__banner-eyebrow {
    font-family: var(--font-en);
    font-size: 11px;
    letter-spacing: .3em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 8px;
    font-weight: 600;
}
.roundtable__banner-title {
    font-family: var(--font-serif);
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 700;
    letter-spacing: -.005em;
}
@media (min-width: 720px) {
    .roundtable__banner-text { left: 48px; bottom: 36px; }
}
@media (max-width: 480px) {
    .roundtable__banner-text { left: 20px; bottom: 20px; }
}

/* ---------- Industry cards (roundtable) ---------- */
.industry {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}
.industry__card {
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: var(--radius-l);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.industry__card:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 40px rgba(15,27,45,.08);
}
.industry__media {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--ink-100);
}
.industry__media img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform .6s var(--ease);
}
.industry__card:hover .industry__media img { transform: scale(1.05); }
.industry__body { padding: 28px 26px 30px; flex: 1; display: flex; flex-direction: column; }
.industry__tag {
    font-family: var(--font-en);
    font-size: 11px;
    letter-spacing: .25em;
    color: var(--gold-2);
    margin-bottom: 12px;
    text-transform: uppercase;
    font-weight: 600;
}
.industry__title {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 20px;
    line-height: 1.4;
    color: var(--ink-900);
    margin-bottom: 14px;
}
.industry__body p {
    font-size: 14.5px;
    line-height: 1.8;
    color: var(--ink-700);
    margin-bottom: 10px;
}
.industry__body b { color: var(--ink-900); }
.industry__foot {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px dashed var(--ink-100);
    color: var(--ink-500) !important;
    font-size: 13.5px !important;
}
.industry .quote { font-size: 14.5px; padding: 16px 18px; }

/* ---------- Golden quotes (dark) ---------- */
.chapter--golden {
    background: var(--ink-900);
    color: var(--paper);
    max-width: none;
    margin-top: 80px;
    margin-bottom: 0;
    position: relative;
    overflow: hidden;
}
.chapter--golden::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 10%, rgba(201,162,74,.18), transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(194,74,74,.10), transparent 55%);
    pointer-events: none;
}
.chapter--golden .chapter__head { position: relative; }
.chapter--golden > * { position: relative; }
.goldens {
    max-width: 980px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}
.golden {
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: var(--radius-l);
    padding: 40px 32px 28px;
    margin: 0;
    position: relative;
    transition: background .3s, border-color .3s, transform .3s;
}
.golden:hover {
    background: rgba(255,255,255,.06);
    border-color: rgba(201,162,74,.4);
    transform: translateY(-2px);
}
.golden__mark {
    font-family: var(--font-serif);
    font-size: 64px;
    line-height: 1;
    color: var(--gold);
    margin-bottom: 4px;
    font-weight: 700;
}
.golden blockquote {
    font-family: var(--font-serif);
    font-weight: 500;
    font-size: clamp(20px, 2.6vw, 30px);
    line-height: 1.45;
    color: #fff;
    margin-bottom: 18px;
    letter-spacing: -.005em;
}
.golden figcaption {
    color: rgba(255,255,255,.55);
    font-size: 13.5px;
    line-height: 1.7;
    border-top: 1px solid rgba(255,255,255,.08);
    padding-top: 14px;
}

/* ---------- Issues ---------- */
.issues {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}
.issue {
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: var(--radius-l);
    padding: 32px 26px;
    position: relative;
    transition: border-color .3s, box-shadow .3s;
}
.issue:hover {
    border-color: var(--gold);
    box-shadow: 0 12px 32px rgba(15,27,45,.06);
}
.issue__no {
    font-family: var(--font-en);
    font-size: 12px;
    letter-spacing: .3em;
    color: var(--gold-2);
    font-weight: 700;
    margin-bottom: 14px;
    text-transform: uppercase;
}
.issue h3 {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 22px;
    color: var(--ink-900);
    margin-bottom: 14px;
    line-height: 1.4;
}
.issue p {
    font-size: 15px;
    line-height: 1.85;
    color: var(--ink-700);
    margin-bottom: 12px;
}
.issue p:last-child { margin-bottom: 0; }
.issue b { color: var(--ink-900); }

/* ---------- Thanks / video ---------- */
.chapter--thanks { max-width: 980px; }
.video {
    max-width: 880px;
    margin: 0 auto 72px;
}
.video__media {
    position: relative;
    border-radius: var(--radius-l);
    overflow: hidden;
    aspect-ratio: 16/9;
    background: var(--ink-900);
    box-shadow: 0 24px 60px rgba(15,27,45,.20);
}
.video__media video { width: 100%; height: 100%; object-fit: cover; }
.video__play {
    position: absolute;
    inset: 0;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(180deg, rgba(15,27,45,.15), rgba(15,27,45,.5));
    color: #fff;
    transition: background .3s;
}
.video__play i {
    width: 76px; height: 76px;
    display: flex; align-items: center; justify-content: center;
    background: var(--gold);
    color: var(--ink-900);
    border-radius: 50%;
    font-size: 22px;
    padding-left: 6px;
    box-shadow: 0 0 0 0 rgba(201,162,74,.5);
    animation: pulse 2.4s var(--ease) infinite;
    transition: transform .25s var(--ease);
}
.video__play:hover i { transform: scale(1.06); }
@keyframes pulse {
    0%   { box-shadow: 0 0 0 0 rgba(201,162,74,.55); }
    70%  { box-shadow: 0 0 0 24px rgba(201,162,74,0); }
    100% { box-shadow: 0 0 0 0 rgba(201,162,74,0); }
}
.video.is-playing .video__play { opacity: 0; pointer-events: none; }
.video__caption {
    margin-top: 14px;
    display: flex; justify-content: space-between;
    font-size: 12px;
    color: var(--ink-500);
    letter-spacing: .12em;
    text-transform: uppercase;
    font-family: var(--font-en);
}

.credits {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin-bottom: 64px;
}
.credit {
    background: var(--paper-2);
    border-radius: var(--radius-m);
    padding: 22px 18px;
    text-align: center;
    transition: background .25s;
}
.credit:hover { background: #ECE5D7; }
.credit__icon {
    width: 44px; height: 44px;
    margin: 0 auto 12px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: var(--ink-900);
    color: var(--gold);
    font-size: 16px;
}
.credit__label {
    font-size: 11px;
    color: var(--ink-500);
    letter-spacing: .2em;
    text-transform: uppercase;
    margin-bottom: 4px;
    font-family: var(--font-en);
}
.credit__name {
    font-family: var(--font-serif);
    font-size: 16px;
    color: var(--ink-900);
    font-weight: 600;
}

.join {
    text-align: center;
    background: var(--ink-900);
    color: var(--paper);
    border-radius: var(--radius-l);
    padding: 56px 24px;
    position: relative;
    overflow: hidden;
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.join__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: .22;
    filter: grayscale(.3);
}
.join__bg img { width: 100%; height: 100%; object-fit: cover; }
.join::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(15,27,45,.55), rgba(15,27,45,.75)),
        radial-gradient(circle at 50% 0%, rgba(201,162,74,.20), transparent 60%);
    z-index: 1;
}
.join__inner { position: relative; z-index: 2; }
.join__lead {
    font-size: 12px;
    color: var(--gold);
    letter-spacing: .3em;
    text-transform: uppercase;
    font-family: var(--font-en);
    margin-bottom: 14px;
}
.join__title {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: clamp(24px, 3vw, 32px);
    color: #fff;
    margin-bottom: 8px;
}
.join__title span {
    color: var(--gold);
    font-size: .55em;
    letter-spacing: .15em;
    margin-left: 8px;
    font-weight: 500;
    vertical-align: middle;
}
.join__text {
    color: rgba(255,255,255,.6);
    font-size: 15px;
}

/* ---------- Footer ---------- */
.foot {
    background: #0A1422;
    color: rgba(255,255,255,.6);
    padding: 48px 0;
    border-top: 1px solid rgba(255,255,255,.06);
}
.foot__inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 var(--gutter);
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
}
.foot__brand {
    display: inline-flex; align-items: center; gap: 10px;
    color: #fff;
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 16px;
}
.foot__brand .foot__mark {
    background: var(--gold);
    color: var(--ink-900);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 13px;
    letter-spacing: .15em;
}
.foot__meta {
    display: flex; flex-wrap: wrap; gap: 6px 18px;
    font-size: 12px;
    color: rgba(255,255,255,.5);
    letter-spacing: .08em;
}
.foot__copy { font-size: 12px; opacity: .55; }

/* ---------- Back to top ---------- */
.totop {
    position: fixed;
    right: 20px; bottom: 24px;
    width: 48px; height: 48px;
    border-radius: 50%;
    background: var(--ink-900);
    color: var(--gold);
    display: flex; align-items: center; justify-content: center;
    font-size: 16px;
    box-shadow: 0 8px 24px rgba(15,27,45,.30);
    z-index: 90;
    opacity: 0;
    transform: translateY(16px) scale(.85);
    pointer-events: none;
    transition: opacity .25s var(--ease), transform .25s var(--ease), background .25s;
}
.totop.is-show {
    opacity: 1; transform: translateY(0) scale(1);
    pointer-events: auto;
}
.totop:hover { background: var(--gold-2); color: #fff; }

/* ---------- Reveal on scroll ---------- */
[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .7s var(--ease), transform .7s var(--ease);
    will-change: opacity, transform;
}
[data-reveal].is-in {
    opacity: 1;
    transform: none;
}

/* =========================================================
   Tablet
   ========================================================= */
@media (min-width: 720px) {
    .credits { grid-template-columns: repeat(4, 1fr); }
    .industry { grid-template-columns: repeat(2, 1fr); }
    .issues { grid-template-columns: repeat(2, 1fr); }
    .nav__menu { display: none; }
    .nav__primary { display: inline-flex; }
}

/* =========================================================
   Desktop
   ========================================================= */
@media (min-width: 960px) {
    .rail {
        display: block;
        position: fixed;
        top: 50%;
        left: 28px;
        transform: translateY(-50%);
        z-index: 80;
        background: rgba(250,247,242,.85);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border: 1px solid var(--ink-100);
        border-radius: 14px;
        padding: 18px 16px;
        width: 160px;
        box-shadow: 0 8px 24px rgba(15,27,45,.06);
    }
    .rail__label {
        font-family: var(--font-en);
        font-size: 10px;
        letter-spacing: .3em;
        text-transform: uppercase;
        color: var(--gold-2);
        margin-bottom: 12px;
        font-weight: 700;
    }
    .rail__list { list-style: none; }
    .rail__list li { margin-bottom: 4px; }
    .rail__list a {
        display: flex; align-items: center; gap: 10px;
        padding: 6px 8px;
        border-radius: 6px;
        font-size: 13px;
        color: var(--ink-500);
        transition: color .2s, background .2s, padding .2s;
    }
    .rail__list a span {
        font-family: var(--font-en);
        font-size: 10px;
        color: var(--ink-300);
        letter-spacing: .12em;
        font-weight: 600;
        transition: color .2s;
    }
    .rail__list a:hover { color: var(--ink-900); background: var(--ink-50); }
    .rail__list a.is-active {
        color: var(--ink-900);
        background: var(--paper-2);
        padding-left: 12px;
    }
    .rail__list a.is-active span { color: var(--gold-2); }

    .share { grid-template-columns: 1.05fr 1fr; align-items: start; gap: 64px; }
    .share--alt { grid-template-columns: 1fr 1.05fr; }
    .share--alt .share__media { order: 2; }

    .chapter { padding: clamp(96px, 9vw, 160px) var(--gutter); }
    .hero__inner { padding: 140px var(--gutter) 120px; }
    .totop { right: 32px; bottom: 32px; width: 52px; height: 52px; }
}

@media (min-width: 1200px) {
    .rail { left: 36px; }
}

/* =========================================================
   Mobile tweaks
   ========================================================= */
@media (max-width: 480px) {
    .nav__brand-text { display: none; }
    .nav__brand-divider { display: none; }
    .hero__title { font-size: 56px; }
    .hero__corner { width: 22px; height: 22px; }
    .hero__corner--tl, .hero__corner--tr { top: 80px; }
    .hero__meta { gap: 6px 16px; }
    .hero__meta-item { font-size: 12px; }
    .pullquote { padding: 32px 18px 22px; }
    .industry__body, .issue { padding: 24px 20px; }
    .golden { padding: 32px 24px 22px; }
    .golden__mark { font-size: 48px; }
}

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